Week 5

AIM: To create Volume mesh for the given rear view mirror solid model using tetra mesh criteria.

Quality Criteria:

S.No	Quality Criteria	Value
1	Target/Average length	1
2	Minimum Length	0.5
3	Maximum Length	2
4	Tetcolapse	0.2

Procedure:

• We perform a topo for the given model.

• We check for any geometry errors and correct the errors with the use of Auto Fix.

• We provide the quality criteria for the model before meshing.

• We will individually select the PID’s for meshing.

• We do a spot mesh with Ortho Tria’s for tetra elements for all round corners for each of the individual PID’s. This is a part of surface meshing.

• We do spot mesh with normal Tria’s for flat surfaces on the each individual PID’s. This is a part of surface meshing.
• Now procced further to create Volume mesh. First, we define the solid manually for each PID’s individually.

• We now define the meshing option for tetra rapid for every instance.

Learning Outcome:

• Surface meshing is done for bodies with more than 5mm thickness. The surface mesh is a representation of a surface that consists of vertices, edges and faces.
• We then fill the same with Tetrahedral or Hexahedral elements
• These Tetrahedral are called unstructured meshing. This can be achieved by Terta rapid in ANSA.
• These Hexahedral are called structured meshing. This can be achieved by Terta FEM in ANSA.

Conclusion:

• Surface meshing is cleaner and simpler as compared to Shell meshing.
• Volume meshing gives us an insight on the entire body would react upon different forces applied.