WS8.1-1 ANSYS, Inc. Proprietary © 2009 ANSYS, Inc. All rights reserved. April 28, 2009 Inventory...

WS8.1-1ANSYS, Inc. Proprietary© 2009 ANSYS, Inc. All rights reserved.

April 28, 2009Inventory #002597

Workshop 8.1

Line and Surface Bodies

DesignModeler



Workshop Supplement

Workshop 8.1, Line and Surface Bodies

•Goals:– Create a sketch representing beams used to stiffen a

panel.– Create a line body from the sketch. – Choose a beam cross section to be used and assign it

to the line body.– Create a surface model representing the panel.



Workshop Supplement


• Project Page>Component Systems>Geometry



Workshop Supplement


• Project Page>Component Systems>Geometry

a

b RMB

• DM will Open. When prompted choose “mm” as the length unit



Workshop Supplement

Create a rectangle in the XY Plane[Sketch] > Rectangle

1. Place the cursor near the origin until ‘P’ appears, click then drag to define the rectangle

Click “>Look At” & “>Zoom to Fit” tool buttons, and Triad ISO Ball as desired.


1



Workshop Supplement

Dimension the rectangle 600X300 mm as shown

[Sketch] > Dimension > General

Horizontal = 600 mm

Vertical = 300 mm

Fit the sketch and move dimensions as necessary

[Sketch] > Dimension > Move




Workshop Supplement

Add 2 vertical lines and dimension as shown

[Sketch] > Draw > Line

2.Place the cursor near the top line until the ‘C’ coincidence constraint appears. Move the cursor to the bottom line until the ‘C’ appears and a ‘V’ indicating a vertical constraint.

3.Repeat for second line

Apply horizontal dimensions as shown.

[Sketch] > Dimension > Horizontal

Adjust Details so all dimensions are as indicated


1 2



Workshop Supplement

Create a Line Body from Sketch1

[Main Menu] > Concept > Lines From Sketches

4. Select “Sketch1” from the Tree (click the “+” near the XYPlane to expand that branch if necessary) and “>Details>Apply” it as the base object

5. Click >Generate




Workshop Supplement

Select a rectangular tube type cross section: [Main Menu] > Concept > Cross Section > Rectangular Tube

After selection, the cross section is displayed with its dimensions.

In this case we will use the default dimensions.

If desired the cross section Details can be changed to modify the cross section.




Workshop Supplement

With a cross section selected we now need to associate it with our line body.

6.Highlight the line body in the tree and the details shows that no cross section is yet associated with it.

[tree] > 1 Part, 1 Body > Line Body (at bottom of tree)

7.Click in the “Cross Section” field

8.Choose “RecTube1” from the drop down list




Workshop Supplement

9. After assigning the cross section to the line body the default display shows the line body with its cross section alignment (see right). We can also display the beam with the cross section displayed as a solid.

[Main Menu] > View > Show Cross Sections Solids




Workshop Supplement

The next step is to create the surfaces between the beams. These surfaces will be shell meshed in the MECHANICAL.

10.[Main Menu] > Concept > Surfaces From Edges

Hold the control key and select the 4 lines shown at right.

(or can hold down LMB and sweep mouse over lines to be group selected)

11.>Apply

11

10




Workshop Supplement

12. “>Generate” the Surface Body.

Note: a frozen surface body is created, bounded by the selected lines

Repeat the previous steps to create two more surface bodies

“>Generate” as necessary

12




Workshop Supplement

The final modeling operation is to place all the bodies into a single part (multi-body part).

We must do this to insure that, when meshed, each boundary “recognizes” its neighbor resulting in a continuous mesh.

Set the Selection Filter to “Bodies”.

In the graphics window right mouse click and choose “>Select All”




Workshop Supplement

With all bodies selected, again right click in the graphics window and choose “Form New Part”.

By examining the Tree notice a single part has been formed which contains 4 bodies.




Workshop Supplement

• Shown here we have moved to a MECHANICAL environment in Workbench and meshed the geometry.

– By grouping all bodies into a common (single) part, nodal connectivity

is insured.


WS8.1-1 ANSYS, Inc. Proprietary © 2009 ANSYS, Inc. All rights reserved. April 28, 2009 Inventory...

Documents

Transcript of WS8.1-1 ANSYS, Inc. Proprietary © 2009 ANSYS, Inc. All rights reserved. April 28, 2009 Inventory...