Lab Report Cae

8/11/2019 Lab Report Cae

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Objective

1) Familiarizing with MSC PATRAN & NASTRAN

2) Building and analyzing simple solid geometry

3) Checking structural integrity of simply supported beam

Problem Statement

Analyze a simple-supported beam with a concentrated load

Beam dimension 1 x 1 x 12

E = 30 x 106psi

v= 0.3

load = 200 lb


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Methodology

Step 1: Created a new database and name it as new1. Then chose based on model as the tolerance,

selected MSC.Nastran as the analysis code and structural as the analysis type in the new model

preferences.

Step 2: Create a solid to represent the beam by clicked the icon geometry at the above. Next

selected create, solid and primitive. Filled the length, x axis of the beam as 12 that given in the

question and changed the solid into iso 1 view.

Step 3: Chose the icon of element at the above to create a solid mesh and selected create, mesh

and solid. After that, picked the solid that needed to fill in input list and apply it.

Step 4: Selected the icon of load/BCs for the use of created boundary conditions. Picked create,

displacement and nodal in first three choices and entered left_end as the new set name. Then

clicked input data and entered for translations and clicked ok. After that, clicked select

application region and selected geometry for geometry filter. Clicked the curve filter at the above

and picked the left edge of the solid then clicked add, ok and apply.

Repeated the step 4 by created another boundary condition but with for translations and

with right edge of the solid.

Step 5: Applied load which maintain with load/BCs and selected create, force and nodal. Entered

load as the new set name. Then clicked input data and entered for force and clicked

ok. Next, clicked select application region and selected FEM for the geometry filter. Shifted the

two node at the middle of the solid, then clicked add, ok and apply.

Step 6: Clicked Material for creating material properties and selected create, isotropic and

manual input. Entered steel as the material name, clicked input properties and entered 30e6 for

the elastic modulus and 0.3 for the poisson ratio. Lastly clicked ok and apply.

Step 7: Clicked the properties icon to create physical properties. Selected create, 3D and solid

and entered solid_beam as the property set name. Selected on steel in the input properties and

clicked ok. After that, clicked on select members box and picked the solid and clicked add, apply.

Step 8: Run analysis with MSC.Nastran by selected the analysis icon and clicked analyze, entire

model, and full run. Next, clicked solution type and chose linear static as the solution type then

continue with ok and apply.

Step 9: Examined the warning and fatal error messages with opening of the file titled new1.f06

with any text editor.

Step 10: Add new boundary condition to properly constrain model. Clicked on load/BCs icon

and selected create, displacement and nodal. Entered z_constraint as the new set name then

clicked input data and entered < , ,0> for translations and clicked ok. Next, clicked select


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application region and selected geometry for the geometry filter. Selected the point filter at the

above and pick the left corner of the solid that same point in step4. Clicked add, ok and apply.

Step 11: Re-run the analysis by repeated the step 8 and 9. Make sure that there is no warning or

fatal error message in .f06 file.

Step 12: Access the results file by selected access results, attach XDB and result entities. Clicked

select result file and selected the file new1.xdb and clicked ok and apply.

Step13: Clicked on icon result to plot the result. Chose create, quick plot. Then selected stress

tensor for fringe result, displacement for deformation result and apply.

Result

a) fringe plot (deformed)


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b) stress tensor only

c) displacement only

From MSC Nastran, it shown that the maximum stress is 3.46x103lb in

-2and the minimum stress

is 1.76x103lb in

-2. The average stress is 2.61x10

3lb in

-2. The maximum displacement is

2.95x10-3

in


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Discussion

The analysis

Conclusion/Summary

Lab Report Cae

Documents

Transcript of Lab Report Cae