Week 3 - 2D meshing for sheet metal

WEEK 3 Challenge

Aim To develop a mesh for given Sheet metal part.

Procedure:

Set mesh Parameters and Quality criteria

Resolution: set perimeter length to 1

Measure the thickness of sheet metal for different region.

Run geometry check and fix issues.

To develop an auto mid surface using skin option we need closed volume.

On Mid surface extraction, delete unnecessary hot points, defeature the surface as per need.

Set perimeter length to target length

Generate mesh by using Mesh>Mesh Generation>Best option

Fix Quality issues by MV Free command

Eliminate Trias using Collapse, Split, Swap, Paste options.

The fillet region fails in aspect as well as minimum length, Defeature the fillet throughout using Join Option.

Defeaturing the fillet

remove unnecessary perimeter lines

Capture features

Assign thickness value to mesh

Shell to solid off

shell to solid on

 

Learning Outcomes:

Geometry check, Mesh parameters, Quality Criteria

Use of following commands: -

topo, join, cut, split, swap, paste, combine, Best, Shell to Solid,

smooth, reconstruct

Assigned keyboard shortcuts for different commands

Defeaturing best practices

Capture peak of punch or fillet, remove unnecessary hot points and perimeters, eliminate opposite trias, reduce number of trias, no trias at perimeter and edges.

Conclusion

Identified different features and developed methods to capture them, better mesh flow was developed and elimination of trias and quality off elements was carried out using options discussed above. It is in my knowledge that to develop a mid-surface for sheet metal parts can be done manually using offset method and automatically using skin option. Further the modifications are done using options in Mesh module. Assigning thickness in PID and finally checking the mesh and CAD alignment using shell to solid option are general practices.