This function automatically repairs gaps and improves element quality in the mesh by merging nearby nodes and modifying elements. Caution should be used when using this function as it can change the geometry of the tooling. Several user-defined controls are given for identifying and repairing the imperfect mesh. After selecting elements that need to be repaired, the REPAIR PARAMETERS window appears as shown in Figure 5.3.23.
Figure 5.3.23 Mesh Repair
PRIORITY
The user can set the priority to split quads into 4 Triangles or 2 Triangles, and take FEATURE LINE or WARPAGE into account when doing the repair.
REPAIR
The user can select SHORT EDGE and/or SHAPE EDGE or neither.
PARAMETERS FOR CHECKING BAD ELEMENTS
These parameters are the criteria for repairing bad elements: MINIMUM ELEMENT SIZE (DTOL), SHARP ANGLE TOLERANCE (ATOL), LARGE ANGLE TOLERANCE (CA_TOL), WARPAGE TOLERANCE (W_TOL), FEATURE LINE ANGLE TOLERANCE (F_TOL), and GAP TOLERANCE (GAP_TOL).
After the necessary parameters are defined, click OK to perform mesh repair. The selected mesh will be checked and repaired according to the defined criteria. The program will display the repaired mesh and prompt for acceptance.