Generating the mesh with assignment of size around lines

1. Open the Preferences window, which is found in Utilities. Bring forward the Meshing card. In this window there is an option called Unstructured Size Transitions, which defines the size gradient of the elements. A high gradient number enables the user to concentrate more elements on the wheel profile. To do this, select a gradient size of 0.8. Click Accept.

2. Choose Meshing Reset mesh data to delete the previously assigned sizes from section 5.2.

3. Choose Meshing Assign Sizes Lines. A window comes up in which to enter the element size around the lines to be selected. Enter size 0.7. Select only the lines of the wheel profile using the same process as in section 5.2.

Figure 42. Selected lines of the wheel profile

4. Choose Meshing Generate. A window appears asking if the previous mesh should be eliminated. Click Yes.

5. Another window comes up in which to enter the maximum element size. Leave the default value unaltered.

6. A greater concentration of elements has been achieved around the lines selected. In contrast to the case in section 5.2., this mesh is more accurate since lines define the profile much better than points do (Figure 43).

Figure 43. Mesh with assignment of sizes around lines