Week 3 - 2D meshing for Sheet metal

Week - 3 – 2D Meshing for Sheet Metal

HOOD INNER PANEL

Report

Aim

For the given Hood Inner Panel CAD model,

• To check for the geometrical errors
• take the mid surface.
• mesh the Surfaces with the given 2D element Quality criteria.

Quality criteria

Sl. No	Quality Criteria	Value
1	Target/Average length	5
2	Minimum Length	2
3	Maximum Length	7
4	Aspect	3
5	Warpage	15
6	Skewness	45
7	Jacobian	0.7
8	Minimum Quad Angle	45
9	Maximum Quad Angle	135
10	Minimum Tria Angle	30
11	Maximum Tria Angle	120
12	Tria Percentage	15

Procedure

1. Open the cad model in ANSA V23.0.0 using the file>open option. 

2. Go for the Length option from the mesh module to find out the actual geometry of a model.

3. Geometry check

4. Perform FIX

5. Taking mid-surface.

6. Perform Classic TOPO – Faces – Orient

7. Geometry check, uncheck the single con and execute.

8. Before meshing update quality and mesh parameter.

Quality Parameter

Mesh Parameter

9. Since the model is symmetry, we can delete the half and do meshing in one half.

10. After meshing one half we must do

Transform-Copy-Symmetry

11. Now do Classic TOPO – Faces – Topo

12. Then perform meshing.

After Meshing

Final Meshing Model

Thickness Applied

Thickness applied Model

Conclusion:

• Before performing the mesh on the model component, first, the model should be ready with all topological clean-ups.
• In order to achieve good mesh, remove the trias at edges, opposite trias, back-to-back trais, and trias at the circular sections and fillet regions need to avoid.
• Use the smooth option, for smoothing the mesh in a uniform manner.
• Mesh should pass all the Quality criteria parameters.
• Meshing the symmetrical axis of the components saves a lot of time.

Result:
For the given Hood Inner Panel CAD model,

• the geometrical errors have been checked and fixed.
• took the mid surface.
• meshed the Surfaces with the given 2D element Quality criteria.