Page 157 - Using ANSYS for Finite Element Analysis A Tutorial for Engineers

144 • Using ansys for finite element analysis
7. Perform the Boolean operation add to union the areas together:
Preprocessor -> Modeling -> Operate -> Booleans -> Add -> Areas ->
Pick All
8. Create the geometry for three hexagons, two of 7 mm side (at the
ends) and one of 9 mm side (in the center):
Preprocessor -> Modeling -> Create -> Areas -> Polygon -> Hexagon
-> In the dialog box, enter WP X = 1.25, WP Y = 1.25, Radius = 0.7 ->
Theta = 120 -> Apply -> Enter values for the next hexagon -> WP X
= 6.25, WP Y = 1.25, Radius = 0.9 -> Theta = 120 -> Apply -> Enter
values for the next hexagon -> WP X = 11.25, WP Y = 1.25, Radius =
0.7 -> Theta = 120 -> OK
9. Perform the Boolean operation subtract to get the hexagonal holes
in the wrench body:
Preprocessor -> Modeling -> Operate ->Booleans -> Subtract ->
Areas -> Click on the solid portion of the wrench -> Apply -> One by
one, pick the three hexagonal areas -> OK

10. Now, create a mesh in the final wrench shape, first refining the
mesh size:
Preprocessor -> Meshing -> Size Controls -> ManualSize -> Size ->
Enter Size = 0.1 -> OK Preprocessor -> Meshing -> Mesh -> Areas ->
Free -> Click on the wrench -> OK