Week- 8 - Solid meshing

AIM:- To obtain a 3D Tetra Mesh from the rear view mirror components and check for geometrical errors and mesh with the given Quality criteria.

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

Procedure:-

1. Import the CAD geometry in ANSA

Perform topo to get refined geometry.

2. Perform Geometry Checkup

Tools>> Checks >> Geometry>> Execute.

Various errors are shown such as needle faces, unchecked faces, triple cons, etc. Auto fix option was opted for resolving these errors.

3. Shell Meshing:

-Switch to mesh mode and give the shell element size length according to the targeted length = 1 mm.

-Give the required quality criteria. Average/target lengthis specified in the mesh parameters as well.

-Select spot mesh and the surface of the geometry model to be meshed using tria elements.
for better results use ortho tria for curved surfaces and normal tria for flat/ plane surfaces.

-After meshing the geometry we check for the failed elements or off elements and remove them with the help of reconstruct, split or swap.
-To fix the kinks and raised edges since these elements will come out of the geometry and it will not be shown as failed elements or off elements.

4. Volume Mesh

• Now, under volume mesh module the volume of the given component is defined using tool volumes--->define--->manual option.
• In order to volume mesh we need to define the geometry as closed volume. So, we will define under them difference property ids.
• 

Result:

The given rear view mirror model was meshed with the tria elements and the volume mesh was created and was checked for tetcollapse errors