Collection_Abaqus.pdf

8/10/2019 Collection_Abaqus.pdf

1/1762012 Hormoz Zareh & Jenna Bell 1 Portland State University, Mechanical Engineering

Abaqus/CAE (ver. 6.11)Shell Tutor ial

Problem Description

The aluminum arch (E = 70 GPa, = 0.3) shown below is completely clamped along the flat faces. The arch

supports a pressure of 100 MPa.

In this example, we also practice how to mesh a portion of geometry and how to avoid modeling

unnecessary segments!



Analysis Steps1. Start Abaqus and choose to create a new model database

2. In the model tree double click on the Parts node (or right click on parts and select Create)

3. In the Create Part dialog box (shown above) name the part and

a. Select 3D

b. Select Deformable

c. Select Shell

d. Select Extrusion

e.

Set approximate size = 100f. Click Continue

4. Create the geometry shown below (not discussed here). Units shown are in mm.



a.

Click Done

b.

Set Depth = 10

c. Click OK

5. Double click on the Materials node in the model tree

a.

Name the new material and give it a description

b. Click on the Mechanical tabElasticityElastic

c. Define Youngs Modulus and the Poissons Ratio (use SI (mm) units)

i. WARNING: There are no predefined system of units within Abaqus, so the user is

responsible for ensuring that the correct values are specified

ii. See the table of consistent units below

Quantity SI SI (mm) US Unit (ft) US Unit (inch)

Length m mm ft in

Force N N lbf lbf

Mass kg tonne (103kg) slug lbf s

2/in

Time s s s s

Stress Pa (N/m2) MPa (N/mm

2) lbf/ft

2 psi (lbf/in

2)

Energy J mJ (103

J) ft lbf in lbfDensity kg/m

3 tonne/mm

3 slug/ft

3 lbf s

2/in

4

d. Click OK



6.

Double click on the Sections node in the model treea. Name the section shell_properties and select Shell for the category and Homogeneous for the

type

b. Click Continue

c. Select the material created above (aluminum) and set the thickness to 1 (mm).

d. Adjust the thickness integration points if necessary

i. For Simpson integration the number of points must be odd and between 3 and 15

ii. For Gauss integration the number of points must be between 2 and 15

e. Click OK

7. Expand the Parts node in the model tree, expand the node of the part just created, and double click on

Section Assignments

a. Select the entire geometry in the viewport and press Done in the prompt area

b. Select the section created above (shell_properties).

c. Specify shell offset if necessary. For this example use the default of middle surface.

d. Click OK



8. In the toolbox area click on the Partition Face: Sketch icon

a.

Select all faces and click Done

b.

Select one of the flat faces as the sketch plane

c. Specify Through All for the projection distance. Note the arrow should encompass the entire part.

d. Select Flip if the arrow showing the project direction is incorrect, and/or press OK

e. Select one of the edges on the end of the part as the vertical sketch direction

f.

Create a sketch that will divide the part into quarters. For example: draw a vertical line, select the

equal distance constraint, pick the node at the upper right, pick the node at the upper left, then pick

the drawn vertical line. The constraint will move the line to the midpoint.

g. Select Done



9.Expand the Assembly node in the model tree and then double click on Instances

a.

Select Dependent for the instance type

b.

Click OK

10.Save the model

a.

This model will be used as a starting place for further tutorials



11.Double click on the Steps node in the model tree

a.

Name the step, set the procedure to General, and select Static, General

b.

Give the step a description

12.Expand the History Output Requests node in the model tree, and then right click on H-Output-1 (H-Output-1

was automatically generated when creating the step) and select Delete



13.Expand the Field Output Requests node in the model tree, and then double click on F-Output-1 (F-Output-1

was automatically generated when creating the step)

a.

Uncheck the variables Strains and Contact

14.Because the part is symmetrical and the flat surfaces are fully restrained only a quarter of the arch needs to

be modeled.

15.

Because the flat surfaces are assumed to be fully restrained we do not need to include them, and can insteadfix just the edge.

16.Double click on the BCs node in the model tree

a. Name the boundary conditioned Fixed and select Symmetry/Antisymmetry/Encastre for the type



b.

Select the edge shown below and click Done

c. Select ENCASTRE for the boundary condition and click OK

Note:Restraining the entire surface will be inefficient, requiring

unnecessary meshing of the portion of the geometry which will haveno influence on the stiffness properties, and thus the result of

simulation. Therefore, the restraint is applied to the shown edge to

reduce the problem size. Noting this, the geometry creation couldhave been simplified right from the start!

17.

Double click on the BCs node in the model tree

a.

Name the boundary conditioned Zsymm and select

Symmetry/Antisymmetry/Encastre for the type

b. Select the edge shown below and click Done



c.

Select ZSYMM for the boundary condition

d. Repeat for the other edge and select Xsymm to apply x-dir symmetry condition.

18.Double click on the Loads node in the model tree

a. Name the load Pressure and select Pressure as the type



b.

Select the quarter of the arch surface with the boundary conditions applied to it

c.

Select the color corresponding to the top surface

d. For the magnitude enter 600



19. In the model tree double click on Mesh for the Arch part, and in the toolbox area click on the Assign

Element Type icon

a.

Select the portion of the geometry associated with the boundary conditions and load

b. Select Standard for element type

c. Select Linear for geometric order

d. Select Shell for family

e.

Note that the name of the element (S4R) and its description are given below the element controlsf. Select OK

20. In the toolbox area click on the Assign Mesh Controls icon

a. Select the portion of the geometry

associated with the boundary

conditions and load

b. Change the element shape to Quad

21. In the toolbox area click on the Seed Edges icon

a.

Select the shorter edges of the portion of the geometry associated with the

boundary conditions and load

i. Select By Number method and Specify 5 elements



b.Repeat step a. for the longer curved edges of the portion of the geometry associated with the

boundary conditions and load

ii.

Specify 10 elements

c. Select Done

22. In the toolbox area click on the Mesh Region icon

d. Select the portion of the geometry associated with the boundary conditions and load

e. Select Done



23. In the model tree double click on the Job node

a.

Name the job arch_linear_static

b.

Give the job a description

24. In the model tree right click on the job just created (arch_linear_static) and select Submit

f. Ignore the message about unmeshed portions of the geometry, click yes to continue.

g. While Abaqus is solving the problem right click on the job submitted (arch_linear_static), and select

Monitor

h. In the Monitor window check that there are no errors or warnings

iii. If there are errors, investigate the cause(s) before resolving

iv.

If there are warnings, determine if the warnings are relevant, some warnings can be safely

ignored


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2012 Hormoz Zar

25. In the m

Result

26.

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27.Display the deformed contour of the (Von) Mises stress overlaid with the undeformed geometry

a.

In the toolbox area click on the following icons

i.

Plot Contours on Deformed Shape

ii. Allow Multiple Plot States

iii. Plot Undeformed Shape

28.

In the toolbox area click on the Common Plot

Options icon

a. Set the Deformation Scale Factor to 10

b.

Click OK



29.To determine the stress values, click on the probe values icon

a.

Set the probe to Nodes

b.

In the viewport mouse over the element of interest

c. Note that Abaqus reports stress values from the integration points, which may differ slightly from the

values determined by projecting values from surrounding integration points to the nodes

i. The minimum and maximum stress values contained in the legend are from the stresses

projected to the nodesd. Click on an element to store it in the Selected Probe Values portion of the dialogue box

30.The field output tool bar can be used to change the output displayed

a.

The middle drop down tab selects the field output of interest.

b. The right drop down is used to select the variant or component.


18/1762011 Hormoz Zareh 1 Portland State University, Mechanical Engineering

Abaqus/CAE (ver. 6.10) Material Nonlinearity Tutorial

Problem Description

A rectangular steel cantilevered beam has a downward load applied to the one end. The load is expected to

produce plastic deformation. An experimentally determined stress strain curve was supplied for the steelmaterial. We will investigate the magnitude and depth of plastic strain.



Analysis Steps1. Start Abaqus and choose to create a new model database

2. In the model tree double click on the Parts node (or right click on parts and select Create)


a.

Select 2D Planar

b. Select Deformable

c. Select Shell

d. Set approximate size = 200

e. Click Continue

4.

Create the geometry shown below (not discussed here)



5.Double click on the Materials node in the model tree

a. Name the new material and give it a description

b. The stress strain data, shown below, was measured for the material used

i. This data is based on the nominal (engineering) stress and strain

Nominal Stress (Pa) Nominal Strain

0.00E+00 0.00E+00

2.00E+08 9.50E-04

2.40E+08 2.50E-02

2.80E+08 5.00E-02

3.40E+08 1.00E-01

3.80E+08 1.50E-01

4.00E+08 2.00E-01

ii. Abaqus expects the stress strain data to be entered as true stress and true plastic strain

1. In addition the modulus of elasticity must correspond to the slope defined by the

first point (the yield point)

iii.

To convert the nominal stress to true stress, use the following equation1. = ( 1 + )

iv. To convert the nominal strain to true strain, use the following equation

1. = (1 + )

v. To calculate the modulus of elasticity, divide the first nonzero true stress by the first nonzero

true strain

vi. To convert the true strain to true plastic strain, use the following equation

1. =

0.00E+00

1.00E+08

2.00E+08

3.00E+08

4.00E+08

-5.00E-16 2.50E-02 5.00E-02 7.50E-02 1.00E-01 1.25E-01 1.50E-01 1.75E-01 2.00E-01

NominalSt

ress(Pa)

Nominal Strain



vii.The results should be

True Stress (Pa) Plastic Strain Elastic Modulus (Pa)

2.002E+08 0.000E+00 2.1083E+11

2.460E+08 2.374E-02

2.940E+08 4.784E-02

3.740E+08 9.436E-02

4.370E+08 1.388E-01

4.800E+08 1.814E-01

c. Click on the Mechanical tabElasticityElastic

i. Enter the calculated modulus of elasticity, and Poisons ratio of 0.3

d. Click on the Mechanical tabPlasticityPlastic

i. Enter the calculated true stress and plastic strain

1. Note that you can simply copy your calculated values from Excel (or similar) and

paste them into Abaqus

e. Click OK

6. Double click on the Sections node in the model tree

a. Name the section PlaneStressProperties and select Solid for the category and Homogeneous

for the type

b. Click Continue

c. Select the material created above (Steel) and set the thickness to 5.

d. Click OK



7. Expand the Parts node in the model tree, expand the node of the part just created, and double click on

Section Assignments

a.

Select the entire geometry in the viewport and press Done in the prompt area

b.

Select the section created above (PlaneStressProperties)

c. Verify From section is selected under Thickness

d. Click OK

8. Expand the Assembly node in the model tree and then double click on Instances

a. Select Dependent for the instance type

b. Click OK



9. Double click on the Steps node in the model tree

a.

Name the step, set the procedure to General, and select Static, General

b. On the Basic tab, give the step a description and change the time period to 2

i. For this analysis neglect the effects of geometric nonlinearities (Nlgeom = Off)

c. On the Incrementation tab,

i.

Set the initial increment size to 0.05

ii. Set the maximum increment size to 0.2



d. Click OK


a. Name the boundary conditioned Fixed and select Symmetry/Antisymmetry/Encastre for the type

b.

Select the left edge and click Done

c. Select ENCASTRE for the boundary condition and click OK

11.Double click on the Amplitudes node in the model tree

a.

Name the amplitude Triangular Loading and select Tabular

b. Enter the data points shown below



i.Abaqus multiplies the load by the amplitude definition, therefore 0 is no load and 1 is the full

load


a. Name the load and select Surface traction as the type

b.

Select the right edge



c. Under Direction, click edit and select the upper-right corner as the first point, and the lower-right

corner as the second point

d. For the magnitude, enter 5e6

e. For the amplitude, select the amplitude created above (Triangular loading)



13. In the model tree double click on Mesh for the beam part, and in the toolbox area click on the Assign

Element Type icon

a.

Select the entire geometry

b. Select Standard for element type

c. Select Quadratic for geometric order

d. Select Plane stress for family

e.

Note that the name of the element (S4R) and its description are given below the element controlsf. Select OK

14.

In the toolbox area click on the Assign Mesh Controls icon

a. Select the portion of the geometry associated with the boundary conditions and load

b. Change the element shape to Quad

c. Set the technique to Structured



15. In the toolbox area click on the Seed Edges icon

a. Select the left and right edges, click Done

b.

Select By number

c. Set Bias to None

d. Under Sizing Controls enter 8 elements, Click OK

16. In the toolbox area ensure the Seed Edges icon is still selected

a.

Select the top and bottom edges

b. Set Method to By number and Bias to Single

c. Set the number of elements to 50

d. Set the bias ratio to 2



e. The bias arrows point towards the direction of the smaller elements, so in this case they should point

to the left. If they dont, click the Select button located to the right of Flip Bias

f. Select the top and bottom edges and select Done

g.

The arrows should now point to the left

h. Click the OK button

17. In the toolbox area click on the Mesh Part icon




a. Name the job plastic_beam

b.

Give the job a description

19. In the model tree right click on the job just created and select Submit

a. Ignore the message about unmeshed portions of the geometry

b. While Abaqus is solving the problem right click on the job submitted, and select Monitor

c.

d. In the Monitor window check that there are no errors or warnings

i.

If there are errors, investigate the cause(s) before resolvingii. If there are warnings, determine if the warnings are relevant, some warnings can be safely

ignored

iii. In the far right column, note how Abaqus adjusted the increment



20. In the model tree right click on the submitted and successfully completed job, and select Results

21. In the menu bar click on ViewportViewport Annotations Options

a. Uncheck the Show compass option

b. The locations of viewport items can be specified on the corresponding tab in the Viewport

Annotations Options



22.

Display the deformed contour of the (Von) Mises stress

a. In the toolbox area click on the following icons

i. Plot Contours on Deformed Shape

23. In the toolbox area click on the Common Plot Options icon

a.

Set the Deformation Scale Factor to 1b. Click OK

24.Click on the arrows on the context bar to change the time step being displayed

a.

Click on the three squares to bring up the frame selector slider bar



25.To change the output being displayed, in the menu bar click on ResultsField Output

a.

Select one of the plastic strain related outputs (PE or PEEQ)

b. Click OK

Alternatively, you can select the output variable from the corresponding toolbar (shown below).

Hint: If you dont see the toolbar, go to viewToolbars and activate the Field output to display the

toolbar (a checkmark will appear next to it).

Note that PE displays individual plastic strain (similar to principal strain) components, while PEEQ variable

provides the equivalent plastic strain value (similar to vonMises equivalent stress).


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Spring 2011 01/21/11

ABAQUS Tutorial

3D Modeling

This exercise intends to demonstrate the steps you would follow in creating and analyzing a

simple solid model using ABAQUS CAE.

Introduction

A solid undergoes thermal expansion due to the application of heat along with deformation due to

applied load.

Model Definition

Consider a thin aluminum cylinder of length 1 m and inner and outer radii 0.2 m & 0.21 m respectively.

The cylinder is kept fixed at one end and at the other end a tensile load of 200 kPa is applied. The fixed

end of the cylinder is at 273.15 K (the ambient temperature) and the free end at 274.15 K (all other sides

are insulated). The cylinder expands due to the heat flow.

The various functions within ABAQUS are organized into modules and we are going to use these

modules to define the steps in our procedure.

1. >module load abaqus/6.9-2

2. >abaqus cae

3. Once you start ABAQUS CAE select Create Model Databaseto create a new model.

4. The default module that opens up is the Part Module.


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Part Module:

This module allows you to create the geometry required for the problem. To create a 3-D

geometry you first create a 2-D profile and then manipulate it to obtain the solid geometry.

1. From the Part Toolbox on the left of the viewport select Create Part.

2. You can name the part as cylinderor anything else you like. We are going to create a

deformable solidshape in the 3-Dmodeling space through extrusionso we do not

change the default selections.

3. Enter 1 as the approximate size and clickContinue.


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4. Click Create Circle Center and Perimeteron the drawing toolbox and enter 0, 0 as the

center point in field below the viewport and press Enter. Enter the perimeter point as

0.21, 0 and press Enterto complete the circle. Similarly make another circle with the

same center and the perimeter point as 0.2, 0. Press Escto exit the circle definition and

then press Done.

5. Enter the extrusion depth as 1 and press OK.

6. Click Auto-Fit Viewin the toolbar above to zoom out and view all the points.


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This finishes our work in the Partmodule. SelectModule: Property from the toolbar above the

viewport.

Property Module:

In this module you define the material properties for your analysis and assign those properties

to the available parts.

1. Select Create Material from the Property Toolbox.

2. Enter material name as Aluminum. Click on the General tab and select Densityfrom the

drop-down menu. Type in the mass density as 2700. Click on the Mechanicaltab and

select Elasticity>Elasticfrom the drop-down menu. Enter the Youngs Modulus as 70E9

and the Poissons Ratio as 0.33. Click on the Mechanicaltab and select Expansion. Edit

the reference temperature to 273.15 and the expansion coefficient to 23e-6. Click on


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the Thermaltab and select Conductivity. Enter the thermal conductivity as 160. Click on

the Thermaltab and select Specific Heat. Enter the value as 900 and click OK.


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3. Select Create Section from the property toolbox. Name the section as you like. We need

a solid homogeneoussection for our problem. Click Continue. Select the material as

Aluminum and click OK.

4. Click Assign Section on the property toolbox and select the part from the viewport. Click

Donebelow. Select the section you had created and click OK.


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Our work in the Property module is done and we select the Assembly Module from the toolbar

above the viewport.

Assembly Module:

This module allows you to assemble together parts that you have created. Even if you have a

single part you need to include it in your assembly.

1. Select InstancePartfrom the Assembly Toolbox.

2. Select the part you have created from the parts list and then select Instance type:

Independent. Click OK.


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Select Module: Stepfrom the toolbar above.

Step Module:

This module allows you to select the kind of analysis you want to perform on your model and

define the parameters associated with it. You can also select which variables you want to

included in the output files in this modules. You apply loads over a step. To apply a sequence of

loads create several steps and define the loads for each of them.

1.

Select Create Stepfrom the Step Toolbox.

2. Name the step as you want and select Coupled temp-displacementas the procedure.

Click Continue.


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3. The edit step dialog box lets you choose the solution technique, the solver type and

define the time stepping strategy.

4. Under Basicchange the Response to Steady-stateand click OK.

The Interaction Moduleallows you to set up interactions (contact, film), constraints,

connectors, fasteners and wire feature between parts. Our problem does not involve any of

these features but it will be a good idea to explore this module on your own at a later time.

Select Module: Load fromthe toolbar above.

Load Module:

The Load Module is where you define the loads and boundary conditions for your model for a

particular step (indicated in the toolbar above). You can even define loads and boundary

conditions as fields like electric potential, acoustic pressure, etc.

1. Select Create Loadfrom the Load Toolbox. Select SurfaceTraction and click Continue.

Select the top face of the cylinder (z=1) (it gets highlighted in red) and click Done.


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2. Change the Tractiontype to General. Click on the Edit tab under Directionin the dialog

box. Enter the starting point of the direction vector as (0, 0, 0) and the end point as (0,0,

1). Enter the Magnitudeas 2e5 and click OK.

3. Select Create Boundary Conditionfrom the Load Toolbox. Select Symmetry /

Antisymmetry / Encastreand click Continue. Select the bottom face (z=0) of the

cylinder and click Done.Select Pinned(U1=0, U2=0, U3=0) and click OK.


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4.

Again select Create Boundary Conditionfrom the Load Toolbox. Switch Category to

Otherand select Temperature and click Continue. Select the bottom face of the cylinder

and press Done. Enter the magnitude as 273.15 and click OK. Similarly put the top face

at 274.15.


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Now that we have defined the loads and the boundary conditions we move on to mesh the

geometry. SelectModule: Mesh from the toolbar above the viewport.

Mesh Module:

The mesh model controls how you mesh your modelthe type of element, their size etc.

1.

Select Seed Part Instance from the mesh toolbox. Enter the approximate global size as

0.025.


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2. Click on Mesh Part Instanceand then on Yesto mesh the model.


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3.

Select Assign Element Typefrom the mesh toolbox. Under Family select Coupled

Temperature-Displacement and switch Geometric Orderto Quadratic. Click OK.


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When finished select Module: Job from the toolbar above.

Job Module:

This module allows you to submit your model for analysis.

1. Select Create Jobfrom the Job Toolbox. Name the job as you like. Select your model

and click Continue.

2. You can add a description to the job, allocate memory, allot multiple processors and

select precision. Use the default values and click OK.

3. Select the Job Managerfrom the toolbox and click on the Write Input tab.


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4. If you are running the job for the first time it is advisable to run Data Checkto check the

input file for errors. Click OK to overwrite the job files.

5. Once the data check is completed Submit the job for analysis. Click OK to overwrite the

job files. You can click Monitorto observe the progress of the solution process. You cansee the errors, warnings, data and message file.


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6. Once the job is completed click on the Results tab on the job manager. This opens the

VisualizationModulefor postprocessing.

VisualizationModule:

This model allows you to look at your model after deformation. You can also plot values of

stress, displacement, reaction forces, etc. as contours on your model surface or as vectors

or tensors.

1. Select PlotDeformed Shape from the Visualization toolbox.

2. Select PlotContours on Deformed Shape to plot stress contours on the model

surface.


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3. You can see the location of the maximum & minimum stresses by selecting Contour

Options>Limits>Show Location.


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4.

Select Results>Field Output from the main menu. This opens a dialog box that

allows you to select the variable you want to plot in the viewport.

5. Select U (Spatial Displacement at nodes)>Magnitude>OKto plot the displacement

contours on the model.


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6. To plot displacement vectors click on Plot Symbols on Deformed Shape on the

toolbox.

7. You can now animate this plot by selecting Animate Harmonic.

Mouse Gestures:

Ctrl+Alt+Left Click (MB1): Rotate View

Ctrl+Alt+Middle Click (MB2): Pan View

Ctrl+Alt+Right Click (MB3): Magnify View

Use Shift key to select multiple objects.

Note on System of Units:

ABAQUS has no built-in system of units. Specify all unit data in consistent units. Some commonsystems of consistent units:

SI: m, N, kg, s, Pa, J, kg/m3

SI (mm): mm, N, tonne (1000 kg), s, MPa, mJ, tonne/mm3

US Unit (ft): ft, lbf, slug, s, lbf/ft2, ft lbf, slug/ft

3

Questions, comments? Contact: [email protected]


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ME 455/555 Intro to Finite Element Analysis Winter 09 Abaqus/CAE truss tutorial

2009 Hormoz Zareh & Jayson Martinez 1 Portland State University, Mechanical Engineering

Abaqus/CAE Truss Tutorial (Revised January 21, 2009)

ProblemDescription:

Solve for displacements of the free node and the reaction forces of the truss structure shown in the

figure. This is the sample problem from the lecture note example.Material is Steel with E = 210 GPa and =0.25.

1000 mm2

1250 mm2

750 mm

1 kN


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AnalysisSteps1. StartAbaqusandchoosetocreateanewmodeldatabase

2. InthemodeltreedoubleclickonthePartsnode(orrightclickonpartsandselectCreate)

3. IntheCreatePartdialogbox(shownabove)namethepartand

a.

Select2D

Planar

b. SelectDeformable

c.

SelectWire

d.

Setapproximatesize=1

e. ClickContinue

4. Createthegeometryshownbelow(notdiscussedhere)


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5.

DoubleclickontheMaterialsnodeinthemodeltree

a. Namethenewmaterialandgiveitadescription

b. ClickontheMechanicaltabElasticityElastic

c. DefineYoungsModulusandPoissonsRatio(usebaseSIunits)

i. WARNING: TherearenopredefinedsystemofunitswithinAbaqus,sotheuseris

responsible

for

ensuring

that

the

correct

values

are

specified

d. ClickOK


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6.

Doubleclick

on

the

Sections

node

in

the

model

tree

a. NamethesectionHorizontalBarandselectBeamforboththecategoryandTrussforthe

type

b.

ClickContinue

c. Selectthematerialcreatedabove(Steel)

d. Setcrosssectionalarea=0.001(baseSIunits,m2)

e. ClickOK

f. RepeatfortheAngledBar

i. Crosssectionalarea=0.00125


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7. ExpandthePartsnodeinthemodeltree,expandthenodeofthepartjustcreated,anddoubleclick

onSectionAssignments

a. Selectthehorizontalportionofthegeometryintheviewport

b.

ClickDone

c.

SelecttheHorizontalBarsectioncreatedabove

d. ClickOK

e. Repeatfortheangledportionofthegeoemetry

8.

ExpandtheAssemblynodeinthemodeltreeandthendoubleclickonInstances

a. SelectDependentfortheinstancetype

b. ClickOK


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9. DoubleclickontheStepsnodeinthemodeltree

a. Namethestep,settheproceduretoGeneral,andselectStatic,General

b. ClickContinue

c.

Givethestepadescription

d.

ClickOK


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10.ExpandtheFieldOutputRequestsnodeinthemodeltree,andthendoubleclickonFOutput1(F

Output1wasautomaticallygeneratedwhencreatingthestep)

a. UncheckthevariablesStrainsandContact

b.

ClickOK

11.

Expandthe

History

Output

Requests

node

in

the

model

tree,

and

then

right

click

on

H

Output

1(H

Output1wasautomaticallygeneratedwhencreatingthestep)andselectDelete


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12.DoubleclickontheBCsnodeinthemodeltree

a. NametheboundaryconditionedPinnedandselectDisplacement/Rotationforthetype

b. ClickContinue

c.

Selecttheendpointsontheleft(shiftselect)andpressDoneinthepromptarea

d.

ChecktheU1andU2displacementsandsetthemto0

e. ClickOK


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13.DoubleclickontheLoadsnodeinthemodeltree

a. NametheloadPointLoadandselectConcentratedforceasthetype

b. ClickContinue

c.

SelectthevertexontherightandpressDoneinthepromptarea

d.

SpecifyCF2 =1000

e. ClickOK


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14. InthemodeltreedoubleclickonMeshfortheTrusspart,andinthetoolboxareaclickonthe

AssignElementTypeicon

a. SelectStandardforelementtype

b.

SelectLinearforgeometricorder

c.

SelectTrussforfamily

d. Notethatthenameoftheelement(B21)anditsdescriptionaregivenbelowtheelement

controls

e. ClickOK

15. InthetoolboxareaclickontheSeedEdge:ByNumbericon(holddownicontobringuptheother

options)

a. SelecttheentiregeometryandclickDoneinthepromptarea


64/176



b.

Definethenumberofelementsalongtheedgesas1andclickEnterinthepromptregion,

thenDoneinresponsetothenextprompt.

c.

16. InthetoolboxareaclickontheMeshParticon

a.

Click

Yes

in

the

prompt

area

17. InthemenubarselectViewPartDisplayOptions

a. OntheMeshtabcheckShownodelabelsandShowelementlabels

b.

ClickOK


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18. InthemodeltreedoubleclickontheJobnode

a. NamethejobTruss

b. ClickContinue

c.

Givethejobadescription

d.

ClickOK

19. Inthemodeltreerightclickonthejobjustcreated(Truss)andselectSubmit

a. WhileAbaqusissolvingtheproblemrightclickonthejobsubmitted(Truss),andselect

Monitor


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b. IntheMonitorwindowcheckthattherearenoerrorsorwarnings

i. Ifthereareerrors,investigatethecause(s)beforeresolving

ii. Iftherearewarnings,determineifthewarningsarerelevant,somewarningscanbe

safelyignored

20. Inthemodeltreerightclickonthesubmittedandsuccessfullycompletedjob(Truss),andselect

Results


67/176



21. InthemenubarclickonViewportViewportAnnotationsOptions

a. UnchecktheShowcompassoption

b. ThelocationsofviewportitemscanbespecifiedonthecorrespondingtabintheViewport

AnnotationsOptions

c.

ClickOK

22.Displaythedeformedcontourofthe(Von)Misesstressoverlaidwiththeundeformedgeometry

a. Inthetoolboxareaclickonthefollowingicons

i.

PlotContoursonDeformedShape

ii. AllowMultiplePlotStates

iii. PlotUndeformedShape


68/176



23. InthetoolboxareaclickontheCommonPlotOptionsicon

a. NotethattheDeformationScaleFactorcanbesetontheBasictab

b. OntheLabelstabcheckShowelementlabels,Shownodelabels,andShownode

symbols

c.

ClickOK


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24.Todeterminethestressvalues,fromthemenubarclickToolsQuery ProbeValues, andclickOK.

a. ChecktheboxeslabeledNodesandS,Mises

b. Intheviewportmouseovertheelementofinterest

c.

NotethatAbaqusreportsstressvaluesfromtheintegrationpoints,whichmaydifferslightly

fromthevaluesdeterminedbyprojectingvaluesfromthesurroundingintegrationpointsto

thenodes

i.

Theminimum

and

maximum

stress

values

contained

in

the

legend

are

from

the

stressesprojectedtothenodes

d.

ClickonanelementtostoreitintheSelectedProbeValuesportionofthedialoguebox

e.

ClickCancel

25.Tochangetheoutputbeingdisplayed,inthemenubarclickonResultsFieldOutput

a.

SelectSpatialdisplacementatnodes

i.

Component=U2

b. ClickOK


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26.Tocreateatextfilecontainingthestresses,verticaldisplacements,andreactionforces(includingthe

total),inthemenubarclickonReportFieldOutput

a. Fortheoutputvariableselect(Von)Mises

b. OntheSetuptabspecifythenameandthelocationforthetextfile

c. UnchecktheColumntotalsoption

d. ClickApply


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73/176



27.Openthe.rptfilewithanytexteditor

a. Onethingtocheckisthatthetotaldownwardreactionforceisequaltotheappliedload

(1,000N)


74/176

1

Abaqus/CAE(ver.6.8)VibrationsTutorial

ProblemDescription

Thetwodimensionalbridgestructure,whichconsistsofsteelTsections,issimplysupportedatitslowercorners.

Determinethefirst10eigenvaluesandnaturalfrequencies.


75/176

2

Analysis

Steps

1. StartAbaqusandchoosetocreateanewmodeldatabase



a. Select2DPlanar

b. SelectDeformable

c.

SelectWire

d. Setapproximatesize=20

e. ClickContinue



76/176


77/176

4

6. DoubleclickontheProfilesnodeinthemodeltree

a. NametheprofileandselectTfortheshape

i.

NotethattheTshapeisoneofseveralpredefinedcrosssections

b. ClickContinue

c. Enterthevaluesfortheprofileshownbelow

d. ClickOK

7.

DoubleclickontheSectionsnodeinthemodeltree

a. NamethesectionBeamPropertiesandselectBeamforboththecategoryandthetype

b. ClickContinue

c. LeavethesectionintegrationsettoDuringAnalysis

d. Selecttheprofilecreatedabove(TSection)

e.

Selectthematerialcreatedabove(Steel)

f. ClickOK


78/176

5

8. ExpandthePartsnodeinthemodeltree,expandthenodeofthepartjustcreated,anddoubleclickon

SectionAssignments

a.

Selecttheentiregeometryintheviewport

b. Selectthesectioncreatedabove(BeamProperties)

c. ClickOK

9. ExpandtheAssemblynodeinthemodeltreeandthendoubleclickonInstances

a.

Select

Dependent

for

the

instance

type

b. ClickOK


79/176

6

10.DoubleclickontheStepsnodeinthemodeltree

a. Namethestep,settheproceduretoLinearperturbation,andselectFrequency

b.

ClickContinue

c. Givethestepadescription

d. SelecttheradiobuttonValueunderNumberofeigenvaluesrequestedandenter 10

e. ClickOK

11.

Doubleclick

on

the

BCs

node

in

the

model

tree

a.

NametheboundaryconditionedPinnedandselectDisplacement/Rotationforthetype

b.

ClickContinue

c. SelectthelowerleftvertexofthegeometryandpressDoneinthepromptarea

d. ChecktheU1andU2displacementsandsetthemto0

e. ClickOK

f. Repeatforthelowerrightvertex,butmodelarollerrestraint(onlyU2fixed)instead


80/176

7

12. InthemodeltreedoubleclickonMeshfortheBridgepart,andinthetoolboxareaclickontheAssign

ElementTypeicon

a.

SelectStandardforelementtype

b. SelectLinearforgeometricorder

c. SelectBeamforfamily

d. Notethatthenameoftheelement(B21)anditsdescriptionaregivenbelowtheelementcontrols

e.

ClickOK

13.

InthetoolboxareaclickontheSeedEdge:ByNumbericon(holddownicontobringuptheotheroptions)

a. SelecttheentiregeometryandclickDoneinthepromptarea

b. Definethenumberofelementsalongtheedgesas5


a. ClickYesinthepromptarea


81/176

8


a. ChecktheRenderbeamprofilesoption

b.

ClickOK

16.ChangetheModuletoProperty

a. ClickontheAssignBeamOrientationicon

b. Selecttheentiregeometryfromtheviewport

c. ClickDoneinthepromptarea

d. Acceptthedefaultvalueoftheapproximaten1direction

17.Notethatthepreviewshowsthatthebeamcrosssectionsarenotallorientatedasdesired(seeProblem

Description)


82/176

9

18. InthetoolboxareaclickontheAssignBeam/TrussTangenticon

a. Clickonthesectionsofthegeometrythatareoffby180degrees


a. NamethejobBridge

b. ClickContinue

c.


d. ClickOK


83/176

10

20. Inthemodeltreerightclickonthejobjustcreated(Bridge)andselectSubmit

a.

WhileAbaqus

is

solving

the

problem

right

click

on

the

job

submitted

(Bridge),

and

select

Monitor


84/176


85/176

12


a. UnchecktheShowcompassoption

b.

ThelocationsofviewportitemscanbespecifiedonthecorrespondingtabintheViewportAnnotations

Options

c. ClickOK

23.Displaythedeformedcontouroverlaidwiththeundeformedgeometry


i. PlotContoursonDeformedShape




86/176

13


a. NotethattheDeformationScaleFactorcanbesetontheBasictab

b.

OntheLabelstabchecktheshownodesymbolsicon

c. ClickOK


87/176

14

25. InthemenubarclickonResultsStep/Frame

a. ChangethemodebydoubleclickingintheFrameportionofthewindow

b.

Observetheeigenvaluesandfrequencies

c. ClickOK

26. InthetoolboxareaclickonAnimationOptions

a.

ChangetheModetoSwing

b. ClickOK

c. AnimatebyclickingonAnimate: ScaleFactoriconinthetoolboxarea

d. Stoptheanimationbyclickingontheiconagain

27.

ClickontheNextarrowonthecontextbartochangethemode


88/176

15

28.ExpandtheBridge.odbnodeintheresulttree,expandtheHistoryOutputnode,andrightclickon

Eigenfrequency:

a.

SelectSaveAs

b. Name=Frequencies

c. RepeatforEigenvalue

d. ObservetheXYDatanodesintheresulttree

29.

Inthe

menu

bar

click

on

ReportXY

a. Selectfrom=AllXYdata

b. HighlightEigenvalues

c. ClickontheSetuptab

d.

ClickSelectandspecifythedesirednameandlocationofthereport

e. ClickApply

f. ClickontheXYDatatab

g. HighlightFrequencies

h.

ClickOK


89/176

16

30.Openthereport(.rptfile)withanytexteditor


90/176

2009

Jayson

Martinez

&

Hormoz

Zareh

1

Portland

State

University,

Mechanical

Engineering

Abaqus/CAEVibrationsTutorial

ProblemDescription

Thetableframe,madeofsteelboxsections,isfixedattheendofeachleg.Determinethefirst10eigenvaluesand

naturalfrequencies.

WARNING: ThereisnopredefinedsystemofunitswithinAbaqus,sotheuserisresponsibleforensuringthatthe

correctvaluesarespecified.HereweuseSIunits


91/176

2009

Jayson

Martinez

&

Hormoz

Zareh

2

Portland

State

University,

Mechanical

Engineering

Analysis

Steps

1. StartAbaqusandchoosetocreateanewmodeldatabase



a. Select3D

b. SelectDeformable

c.

SelectWire

d. Setapproximatesize=5(Notimportant,determinessizeofgridtodisplay)

e. ClickContinue

f. Createthesketchshownbelow


92/176

2009

Jayson

Martinez

&

Hormoz

Zareh

3

Portland

State

University,

Mechanical

Engineering

4. InthetoolboxareaclickontheCreateDatumPlane: OffsetFromPrinciplePlaneicon

a. SelecttheXYPlaneandenteravalueof1fortheoffset

5. InthetoolboxareaclickontheCreateWire:Planaricon

a. Clickontheoutlineofthedatumplanecreatedinthepreviousstep

b. Selectanyoneofthelinestoappearverticalandontheright

c.

InthetoolboxareaclickontheProjectEdgesicon

d.

SelectallofthelinesintheviewportandclickDone

6. InthetoolboxareaclickontheCreateDatumPlane:3pointsicon(clickonthesmallblacktriangleinthe

bottomright

corner

of

the

icon

to

get

all

of

the

datum

plane

options)

a.

Select3pointsonthetopofthegeometry


93/176

2009

Jayson

Martinez

&

Hormoz

Zareh

4

Portland

State

University,

Mechanical

Engineering

7. InthetoolboxareaclickontheCreateWire:Planaricon

a. Clickontheoutlineofthedatumplanecreatedinthepreviousstep

b.

Selectanyoneofthelinestoappearverticalandontheright

c. Sketchtwolinestoconnectfinishthewireframeofthetable

d. ClickonDone

8. DoubleclickontheMaterialsnodeinthemodeltree



c.

DefineYoungsModulus(210e9) andPoissonsRatio (0.25)


94/176

2009

Jayson

Martinez

&

Hormoz

Zareh

5

Portland

State

University,

Mechanical

Engineering

d.

ClickontheGeneraltabDensity

e.

Density=7800

f. ClickOK

9. DoubleclickontheProfilesnodeinthemodeltree

a. NametheprofileandselectBoxfortheshape

b.

ClickContinue

c. Enterthevaluesfortheprofileshownbelow

d. ClickOK

10.

DoubleclickontheSectionsnodeinthemodeltree

a.

Namethe

section

BeamProperties

and

select

Beam

for

both

the

category

and

the

type

b. ClickContinue

c. LeavethesectionintegrationsettoDuringAnalysis

d. Selecttheprofilecreatedabove(BoxProfile)

e.

Selectthematerialcreatedabove(Steel)

f. ClickOK


95/176

2009

Jayson

Martinez

&

Hormoz

Zareh

6

Portland

State

University,

Mechanical

Engineering

11.ExpandthePartsnodeinthemodeltree,expandthenodeofthepartjustcreated,anddoubleclickon

SectionAssignments

a.

Selecttheentiregeometryintheviewport

b. Selectthesectioncreatedabove(BeamProperties)

c. ClickOK

12.ExpandtheAssemblynodeinthemodeltreeandthendoubleclickonInstances

a.

SelectDependentfortheinstancetype

b. ClickOK


96/176

2009

Jayson

Martinez

&

Hormoz

Zareh

7

Portland

State

University,

Mechanical

Engineering


a. Namethestep,settheproceduretoLinearperturbation,andselectFrequency

b.

ClickContinue


d. SelectLanczosfortheEigensolver

e. SelecttheradiobuttonValueunderNumberofeigenvaluesrequestedandenter 10

f.

ClickOK

14.

DoubleclickontheBCsnodeinthemodeltree

a. NametheboundaryconditionedFixedandselectSymmetry/Antisymmetry/Encastreforthetype

b. ClickContinue

c. SelecttheendofeachlegandpressDoneinthepromptarea

d.

SelectENCASTREfortheboundarycondition(ENCASTREmeanscompletelyfixed/clamped)

e.

ClickOK


97/176


98/176

2009

Jayson

Martinez

&

Hormoz

Zareh

9

Portland

State

University,

Mechanical

Engineering


a. ChecktheRenderbeamprofilesoption

b.

ClickOK

19.ChangetheModuletoProperty

a. ClickontheAssignBeamOrientationicon

b. SelecttheportionsofthegeometrythatareperpendiculartotheZaxis

c. ClickDoneinthepromptarea

d. Acceptthedefaultvalueoftheapproximaten1direction(0,0,1)

e. ClickOKinthepromptarea

f. SelecttheportionsofthegeometrythatareparalleltotheZaxis


99/176

2009

Jayson

Martinez

&

Hormoz

Zareh

10

Portland

State

University,

Mechanical

Engineering

g. ClickDoneinthepromptarea

h. EnteravectorthatisperpendiculartotheZaxisfortheapproximaten1direction(i.e.0,1,0)

i. ClickOKfollowedbyDoneinthepromptarea


j. NamethejobTableFrame

k. ClickContinue

l.


m. ClickOK


100/176

2009

Jayson

Martinez

&

Hormoz

Zareh

11

Portland

State

University,

Mechanical

Engineering

21. Inthemodeltreerightclickonthejobjustcreated(TableFrame)andselectSubmit

n. WhileAbaqusissolvingtheproblemrightclickonthejobsubmitted(TableFrame),andselectMonitor

o. IntheMonitorwindowcheckthattherearenoerrorsorwarnings


ii.

If

there

are

warnings,

determine

if

the

warnings

are

relevant,

some

warnings

can

be

safely

ignored

22. Inthemodeltreerightclickonthesubmittedandsuccessfullycompletedjob(TableFrame),andselectResults


101/176


102/176


103/176


104/176

2009

Jayson

Martinez

&

Hormoz

Zareh

15

Portland

State

University,

Mechanical

Engineering

30.Openthereport(.rptfile)withanytexteditor

Note:Eigenvaluesthatareidenticalindicatesimilarvibrationmodes,activatedindifferentplanes.


105/176

ME455/555IntrotoFiniteElementAnalysis Winter10 Abaqus/CAEAxisymmetrictutorial

2010

Hormoz

Zareh

&

Jayson

Martinez

1

Portland

State

University,

Mechanical

Engineering

Abaqus/CAE

Axisymmetric

Tutorial

ProblemDescription

Around

bar

with

varying

diameter

has

atotal

load

of

1000

N

applied

to

its

top

face.

The

bottom

of

the

bar

is

completely

fixed.Determinestressanddisplacementvaluesinthebarresultingfromtheload.


106/176


107/176


2010

Hormoz

Zareh

&

Jayson

Martinez

3

Portland

State

University,

Mechanical

Engineering

5. DoubleclickontheMaterialsnodeinthemodeltree



c.

DefineYoungsModulusandthePoissonsRatio(useSIunits)

i. WARNING: TherearenopredefinedsystemofunitswithinAbaqus,sotheuserisresponsible

for

ensuring

that

the

correct

values

are

specified

6. DoubleclickontheSectionsnodeinthemodeltree

a. NamethesectionAxisymmetricPropertiesandselectSolidforthecategoryandHomogeneousfor

thetype

b. Selectthematerialcreatedabove(Steel)


108/176


109/176


110/176


2010

Hormoz

Zareh

&

Jayson

Martinez

6

Portland

State

University,

Mechanical

Engineering

12.ExpandtheFieldOutputRequestsnodeinthemodeltree,andthendoubleclickonFOutput1(FOutput1was

automaticallygeneratedwhencreatingthestep)

a. UncheckthevariablesStrainsandContact

13.ExpandtheHistoryOutputRequestsnodeinthemodeltree,andthenrightclickonHOutput1(HOutput1was

automaticallygeneratedwhencreatingthestep)andselectDelete


111/176


2010

Hormoz

Zareh

&

Jayson

Martinez

7

Portland

State

University,

Mechanical

Engineering


a. NametheboundaryconditionedFixedandselectSymmetry/Antisymmetry/Encastreforthetype

b. InthepromptareaclickontheSetsbutton

c. SelectthesetnamedFixed

d. SelectENCASTREfortheboundarycondition


112/176


2010

Hormoz

Zareh

&

Jayson

Martinez

8

Portland

State

University,

Mechanical

Engineering

e. RepeattheprocedureforthesymmetryrestraintusingthesetnamedSymmetry,selectXSYMMfor

theboundarycondition


a. NametheloadPressureandselectPressureasthetype

b. SelectsurfacenamedPressure

c. Forthemagnitudeenter


113/176


2010

Hormoz

Zareh

&

Jayson

Martinez

9

Portland

State

University,

Mechanical

Engineering

16. InthemodeltreedoubleclickonMeshfortheBarpart,andinthetoolboxareaclickontheAssignElement

Typeicon

a.

SelectStandardforelementtype

b. SelectLinearforgeometricorder

c. SelectAxisymmetricStressforfamily

d.

Notethat

the

name

of

the

element

(CAX4R)

and

its

description

are

given

below

the

element

controls

17.

InthetoolboxareaclickontheAssignMeshControlsicon

a. ChangetheelementshapetoQuad

b. ChangetheAlgorithmtoMedialaxisforamorestructuredmesh


114/176


2010

Hormoz

Zareh

&

Jayson

Martinez

10

Portland

State

University,

Mechanical

Engineering

18. InthetoolboxareaclickontheSeedParticon

a. Settheapproximateglobalsizeto0.005



a. NamethejobBar

b. Givethejobadescription


115/176


2010

Hormoz

Zareh

&

Jayson

Martinez

11

Portland

State

University,

Mechanical

Engineering

21. Inthemodeltreerightclickonthejobjustcreated(Bar)andselectSubmit

a. WhileAbaqusissolvingtheproblemrightclickonthejobsubmitted(Bar),andselectMonitor

b.

Inthe

Monitor

window

check

that

there

are

no

errors

or

warnings

i.

Ifthereareerrors,investigatethecause(s)beforeresolving

ii. Iftherearewarnings,determineifthewarningsarerelevant,somewarningscanbesafely

ignored

22. Inthemodeltreerightclickonthesubmittedandsuccessfullycompletedjob(Bar),andselectResults


a.

UnchecktheShowcompassoption

b. ThelocationsofviewportitemscanbespecifiedonthecorrespondingtabintheViewportAnnotations

Options


116/176


117/176


2010

Hormoz

Zareh

&

Jayson

Martinez

13

Portland

State

University,

Mechanical

Engineering

a. ChecktheboxeslabeledNodesandS,Mises

b. Intheviewportmouseovertheelementofinterest

c.

NotethatAbaqusreportsstressvaluesfromtheintegrationpoints,whichmaydifferslightlyfromthe

valuesdeterminedbyprojectingvaluesfromsurroundingintegrationpointstothenodes

i. Theminimumandmaximumstressvaluescontainedinthelegendarefromthestresses

projectedto

the

nodes

d. ClickonanelementtostoreitintheSelectedProbeValuesportionofthedialoguebox


a. SelectSpatialdisplacementatnodes

i.

Invariant=Magnitude

27.Tocreateatextfilecontainingthestressesandreactionforces(includingtotal),inthemenubarclickon

ReportFieldOutput

a. Fortheoutputvariableselect(Von)Mises


118/176


2010

Hormoz

Zareh

&

Jayson

Martinez

14

Portland

State

University,

Mechanical

Engineering

b. OntheSetuptabspecifythenameandthelocationforthetextfile

c. UnchecktheColumntotalsoption

d.

ClickApply

a. BackontheVariabletabchangethepositiontoUniqueNodal

b. Uncheckthestressvariable,andselecttheRF1reactionforce

c. OntheSetuptab,checktheColumntotalsoption

d. ClickOK


119/176


2010

Hormoz

Zareh

&

Jayson

Martinez

15

Portland

State

University,

Mechanical

Engineering

28.Openthe.rptfilewithanytexteditor

a. Onethingtocheckisthatthetotalreactionforceisequaltotheappliedload.



Abaqus/CAE (ver. 6.11)Nonlinear Buckling Tutorial

Problem Description

This is the NAFEMS1proposed benchmark (Lees frame buckling) problem. The applied load is based on

the normalized (EI/L

2

) value of F = 996.389N. The analysis will investigate post-buckling nonlinearbehavior of the frame at the applied load location.

This tutorial will also describe x-y plotting capability in Abaqus/CAE, including combining variables to

generate load-displacement plots.

E = 71.74109N/m

2

= 0.0

L = 1.2 m

1National Agency for Finite Element Methods and Standards, NAFEMS Non-Linear Benchmarks(Glasgow:

NAFEMS, Oct., 1989, Rev. 1.) Test No. NL7.

0.2 L 0.8 L

L

0.03

0.02

F



Analysis Steps

1. Start Abaqus and choose to create a new model database

2. In the model tree double click on the Parts node (or right click on

parts and select Create)


a. Select 2D Planarb. Select Deformable

c. Select Wire

d. Set approximate size = 10

e. Click Continue

4. Create the geometry shown below (not discussed here)



5.Double click on the Materials node in the model tree

a. Name the new material and give it a description

b. Click on the Mechanical tabElasticityElastic

i. Enter a Youngs modulus of 71740000000, and

Poissons ratio of 0

c.

Click OK

6. Double click on the Profiles node in the model tree

a. Name the profile and select Rectangular

b. Click Continue

c. Enter 0.03 for a and 0.02 for b

d. Click OK



7. Double click on the Sections node in the model tree

a. Name the section beam and select Beam for

the category and Beam for the type

b. Click Continue

c. Select the profile created above (rect_beam) and

the material created above (Material-1)

d. Click OK

8. Expand the Parts node in the model tree, expand the

node of the part just created, and double click on Section Assignments

a. Select the entire geometry in the viewport and press Done in the prompt area

b. Select the section created above (beam)

c. Click OK

9. In the toolbox area click on the Assign Beam Orientation button

a. Select all the geometry

b. Click Done


124/1762

011 Hormoz Zare

c.

d.

e.

f.

10.Create

a.

b.

c.

h & Jenna Bell

Leave the de

Press the E

The beam n

Click OK to

set for the

Expand the

Name the se

Select the ve

fault values

ter key

rmals should

confirm

pper-center

ssembly nod

t and select

rtex where t

5

f 0.0,0.0,-1.

be oriented

vertex

e in the mod

eometry for

e load is ap

0

as shown be

el tree, and t

the type, Cli

lied, Click D

low.

hen double

k Continue

one

Portland State Un

lick on sets

iversity, Mechani

al Engineering


125/1762

011 Hormoz Zare

11.Expand

a.

b.

12.Double

a.

b.

h & Jenna Bell

the Assemb

Select Depe

Click OK

click on the

Name the st

On the Basic

i.

Give

ii. Set

iii. Und

ly node in t

ndent for th

Steps node

p, set the pr

tab

the step a d

eometric no

r Stopping

6

e model tre

e instance t

in the model

ocedure to

scription an

linearities o

criteria chec

and then d

pe

tree

eneral, an

n (Nlgeom =

k Maximum

uble click on

select Stat

ON)

load propor

Portland State Un

Instances

ic, Riks, Clic

tionality fact

iversity, Mechani

Continue

or and set t

al Engineering

30



c. On the Incrementation tab,

i. Set the initial arc length increment size to 0.1

ii. Set the maximum arc length increment size to 2

iii. Set the maximum number of increments to 200

d. Click OK


d. Name the boundary conditioned Pinned and select Displacement/Rotation for the typee. Click Continue

f. Select the two free ends of the frame and click Done

i. Note: to select multiple items, hold the shift key

g. Select U1 and U2 and set to zero, click OK




a. Name the load and select Concentrated force as the type

b. Click Continue

c. Select the point along the top beam near the corner, Click Done

d. Set CF1 to 0 and CF2 to -996.389

e. Click OK


128/1762

011 Hormoz Zare

15.

In the mElemen

a.

b.

c.

d.

e.

f.

h & Jenna Bell

odel tree doType icon

Select the en

Select Stan

Select Linea

Select Bea

Note that th

Click OK

uble click on

tire geometr

ard for ele

r for geome

for family

name of th

9

Mesh for t

y

ent type

tric order

element (B

e frame par

1) and its de

t, and in the

scription are

Portland State Un

toolbox area

given below

iversity, Mechani

click on the

the element

al Engineering

Assign

controls



16. In the toolbox area click on the Seed Part icon

h. Enter 0.08 for Approximate global size , click OK

17. In the toolbox area click on the Mesh Part icon, Click Yes

18.Expand the History Output Requests node in the model tree, and then

right click on H-Output-1 (H-Output-1 was automatically generated

when creating the step) and select Delete

19.Double click on the History Output Requests node

i. Name the history and select Continue

j. Set the domain to Sets and select the set created above

k. Leave the frequency set to every increment (n=1)

l. For the output variables select the U2 displacement




a. Name the job frame_buckle

b. Give the job a description


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25.On the results tree, expand the History Output node and double

click on the displacement history created

a. Notice that displacement it plotted against Arc Length,

not Load or Load Proportionality Factor.

b. To plot load against displacement, we will need to

extract the values for Load and displacement from theField Outputs.

26. In the Toolbox area click on the Create XY Data icon

a. Choose ODB field output for Source and click Continue

b. On the Variables tab

i. Select Unique Nodal for Position

ii. Expand CF: Point loads and select CF2

iii. Expand U: Spatial displacement and select U2



c. Select the Elements/Nodes tab

iv. Select Node Sets for Methodv. Select the set created earlier Top


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e. Select U:U2 P1: PART. From the XY Data section and click Add to Expression

f. Select CF:CF2 PI: PART. From the XY Data section and click Add to Expression

g. Since the load and displacement both increase in the negative direction, they need to be multiplied

by -1 to make load and displacement increase in the positive direction.

h. The final expression should look like:

i. Click Save As, name it load-displacement, click OK

j. Close the Operate on XY Data window

28.Right click on load-displacement under the XY Data node and

select Plot

k. The buckling behavior can be seen in the plot.



29.This data can also be copied into Excel or other programs.

l. Right click on load-displacement under the XY Data node and select Edit

m. Select all the data in the edit window, right click and choose Copy

n. Open Excel, right click in an empty cell and choose Paste



AbaqusCAE(ver.6.9)ContactTutorial

ProblemDescription

Note: You do not need to extrude the right vertical edge of the sensor.



AnalysisSteps1. StartAbaqusandchoosetocreateanewmodeldatabase



a.

Select3D

b. SelectDeformable

c. SelectShell

d. SelectExtrusion

e. Setapproximatesize=50

f.

ClickContinue



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a.NamethesectionShellPropertiesandselectShellforthecategoryandHomogeneousforthe

type

b.

ClickContinue

c. Selectthematerialcreatedabove(Steel)andsetthethicknessto0.15

d. ClickOK


SectionAssignments

a. Selecttheentiregeometry,exceptfortheverticalface,intheviewportandpressDoneinthe

promptarea

b. Selectthesectioncreatedabove(ShellProperties)

c. Specifyshelloffsetifnecessary

d. ClickOK

8.

Expand

the

Assembly

node

in

the

model

tree

and

then

double

click

on

Instances

a. SelectDependentfortheinstancetype

b.

ClickOK



9. DoubleclickontheStepsnodeinthemodeltree

a. Namethestep,settheproceduretoGeneral,selectStatic,General,andclickContinue

b. Acceptthedefaultsettings


a.

Namethe

boundary

conditioned

Fixed

and

select

Symmetry/Antisymmetry/Encastre

for

the

type

b. SelectthehorizontaledgesontheverticalsurfaceandclickDone

c.

SelectENCASTREfortheboundaryconditionandclickOK




a. NametheboundaryconditionedDispandselectDisplacement/Rotationforthetype

b. Selectthetopedgeofthetriangularportionofthegeometry

c. Settheydisplacementto3



12.DoubleclickontheInteractionPropertiesnodeinthemodeltree

a.

NametheinteractionpropertiesandselectContactforthetype

b. OntheMechanicaltabSelectTangentialBehavior

i. SetthefrictionformulationtoFrictionless

c. OntheMechanicaltabSelectNormalBehavior

i.

Becausethesurfacesdonotstartincontact,changetheconstraintenforcementmethodto

Penalty

13.

DoubleclickontheInteractionsnodeinthemodeltree

a. Nametheinteraction,selectSurfacetosurfacecontact,andclickcontinue

b. Forthemastersurfaceselectthelowerportionofthegeometryandclickdone

i. Whileapplyingthefixeddisplacement,thenodesatthetipoftheupperportionofthe

geometry

will

make

contact

at

an

unknown

location

on

the

lower

surface

ii.

Nodesontheslavesurfacecannotpenetratethesurfaceformedbytheelementfacesonthe

mastersurface

c. Selectthecolorofthesurfacecorrespondingtothetopsurface

d. Fortheslavesurface,settheslavetypetoSurface

e. Selecttheupperportionofthegeometryatthefreeendandclickdone

f. Selectthecolorofthesurfacecorrespondingtothebottomsurface

g. Changethecontactinteractionpropertiestotheonecreatedabove(ifnotalreadydone)


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19. InthemodeltreerightclickonthejobjustcreatedandselectSubmit

d.

Ignorethe

message

about

unmeshed

portions

of

the

geometry

e. WhileAbaqusissolvingtheproblemrightclickonthejobsubmitted,andselectMonitor

f. IntheMonitorwindowcheckthattherearenoerrorsorwarnings


ii. Iftherearewarnings,determineifthewarningsarerelevant,somewarningscanbesafely

ignored

20. Inthemodeltreerightclickonthesubmittedandsuccessfullycompletedjob,andselectResults



21.Displaythedeformedcontourofthe(Von)Misesstressoverlaidwiththeundeformedgeometry


i. PlotContoursonDeformedShape




a.

Setthe

Deformation

Scale

Factor

to

1

b. ClickOK


a.

Selectthecontactpressureatsurfacenodes(CPRESS)

b. ClickOK


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ME455/555IntrotoFiniteElementAnalysis Winter10 Abaqus/CAEHeatTransferTutorial

2010

Hormoz

Zareh

&

Jayson

Martinez

1

Portland

State

University,

Mechanical

Engineering

Abaqus/CAE(ver.6.9)HeatTransferTutorial

ProblemDescription

ThethinLshapedpartshownaboveisexposedtoatemperatureof20oConthetwosurfacesoftheinnercorner,and

120oConthetwosurfacesoftheoutercorner. Aheatfluxof10W/m2isappliedtothetopsurface. Treatthe

remainingsurfacesasinsulated.


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2010

Hormoz

Zareh

&

Jayson

Martinez

4

Portland

State

University,

Mechanical

Engineering

6. DoubleclickontheSectionsnodeinthemodeltree

a. NamethesectionShellPropertiesandselectShellforthecategoryandHomogeneousforthetype

b. ClickContinue

c. Selectthematerialcreatedabove(Steel)andsetthethicknessto1

d.

ClickOK


SectionAssignments

a.

SelectthesurfacegeometryintheviewportandpressDoneinthepromptarea


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2010

Hormoz

Zareh

&

Jayson

Martinez

6

Portland

State

University,

Mechanical

Engineering

e. CreateanothersetnamedInsideTemp

f. SelectthetwosurfacesontheinsideofthecornerintheviewportandpressDoneinthepromptarea

10. Inthemodeltree,undertheexpandedAssemblynode,doubleclickonSurfaces

a. NamethesurfaceHeatFlux

b.

ClickContinue

c. SelectthesurfaceintheviewportandpressDoneinthepromptarea

d. ChoosetheBrownside


a. Namethestep,settheproceduretoGeneral,andselectHeatTransfer

b. ClickContinue


d.

SetthereponsetoSteadystate

e.

ClickOK


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2010

Hormoz

Zareh

&

Jayson

Martinez

8

Portland

State

University,

Mechanical

Engineering

f. Setthemagnitudeto293

g. ClickOK

h. RepeattheprocedurefortheinsidetemperatureusingthesetnamedInsideTemp,setthemagnitude

to393


a. NametheloadHeatFluxandselectSurfaceheatfluxasthetype

b. ClickOK

c.

SelectsurfacenamedHeatFlux


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2010

Hormoz

Zareh

&

Jayson

Martinez

10

Portland

State

University,

Mechanical

Engineering

16. InthetoolboxareaclickontheAssignMeshControlsicon

a. ChangetheelementshapetoQuad

b.

ChangethealgorithmtoMedialaxistoproduceamoreuniformmeshforthisgeometry

17.

Inthe

toolbox

area

click

on

the

Seed

Part

icon

a. Settheapproximateglobalsizeto5

b. ClickOK



a. NamethejobHeatFlux

b.

ClickContinue

c. Givethejobadescriptionandacceptalldefaultparameters

d. ClickOK


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Collection_Abaqus.pdf

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