Week- 5 - Solid meshing

Week- 5 - Solid meshing

Objective:

To clear the geometrical errors and perform 3D mesh using tetra elements for the given component by satisfying the given element quality criteria using ANSA.

Quality Criteria Feature:

S. No	Quality Criteria	Value
1	Target Length	1
2	Minimum Length	0.5
3	Maximum Length	2
4	Tet collapse	0.2

Modal:

Geometry cleanup:

The given component is checked for geometrical errors using checks manager. The errors displayed is cleared using auto fix and tools from hot points, cons, faces & surfaces.

Meshing:

• The quality criteria & mesh parameters values are entered.
• The perimeter length value assigned is 1 mm.
• Using spot mesh option, the surface of the component is meshed using tria elements.
• Ortho trias are used for curved surface and normal trias are used for flat surface.
• The quality criteria are achieved by using tools like reconstruct, smooth and split options.
• Under volume mesh module, volume of the given component is defined using tool volumes>> Define>> manual option.
• The list option in the volumes is used to perform tetra mesh on the defined volumes choosing either the tetra rapid or tetra FEM method.
• The tet collapse issue is cleared using tool move under grids option and quality is achieved by using tool fix quality under improve option.
• The meshed model of given component is as shown in the following figures.

Learning Outcomes:

• To fix the geometrical errors for given model.
• Learnt to mesh solid components using tetra mesh.
• To mesh the given model by satisfying the quality criteria.

Conclusion:

The tetra meshing process was demonstrated in this assignment. Volume mesh for each of the component’s sections were generated quickly. Thus tetra mesh is useful for quickly generating a mesh over a complex 3 dimensional geometry.