Page 88 - Using ANSYS for Finite Element Analysis A Tutorial for Engineers

geometrIc modelIng • 75
11. Round-off on the two sides of the bottom part of the retaining ring
using the fillet command:
Preprocessor -> Modeling -> Create -> Lines -> Line Fillet ->
Using the mouse, pick the arc portion of the right main body,
then pick the straight line on the right bottom part -> Apply ->
In the dialog box, enter RAD Fillet radius = 1 -> Apply
Similarly, pick the arc portion of the left main body, then pick the
straight line on the left bottom part -> Apply ->
In the dialog box, enter RAD Fillet radius = 1 -> OK
Save _DB

12. Go back to the area view mode; lines are no more visible:
Menu bar at the top -> Plot -> Areas
Note: Before generating the mesh, we need to define two different element
types: a 2D element for the cross-sectional view of the retaining ring that
we have just created, and a 3D element to get the actual solid retaining
ring having the required thickness. The 2D area will be first meshed, then
the area will be extruded to create a 3D volume. The mesh will be extruded
along with the geometry, and the 3D mesh elements will be automatically
generated in the volume.

13. Define the two element types:
Preprocessor -> Element Type -> Add/Edit/Delete -> Add ->
In the dialog box, click on Structural-Solid on the left,
then click on Quad 4 node 42 on the right -> Apply ->
Again, in the dialog box, click on Structural-Solid on the left,
then click on Brick 8node 45 on the right -> OK -> Close
Save _DB