Week 4 - 2D Meshing for Sheet Metal

Title: - 2D meshing for sheet metal

Aim: - To understand and perform 2D meshing on sheet metal using ANSA

Objective: - To learn and practice geometry clean-up

To learn extracting mid surface with suitable way and meshing

To remove most of possible off elements according to quality criteria

To remove tria percentage to it's lowest and mentain proper mesh flow

Body of the content: -

CCB CAD model

Steps performed on CAD model

Importing geometry

Performing Topo and Geometry check on imported geometry

Fixing all the errors showing in checks

For performing Auto-Midsurfacing geometry must be error free

Measuring thickness at different locations of different parts

We got parts with different thickness

Selecting parts one by one from property panel and performing mid-surface

(Selecting all parts at once and performing Mid-surfacing will not save parts according properties and respective thickness wich will be useful further)

Assigning Length ('5'which is provided) to parameters and macros also.

Feeding quality criteria as provided

Now taking parts from property panel one by one and performing different tasks such as

• Supressing unwanted edges
• Performing 'Best' mesh and 'remesh' features
• Use of split/swap/collapse/join from element tab seperately or together to improve mesh quality and reduce tria percentage.

Results:- Quads: 24445

Quad percentage: 95.66%

Trias: 1109

Trias Percentage: 4.34%

Total: 25554

Off elements: 0

Conclusion:- From this challenge we have learned about 2D sheet metal meshing on multiple parts, reducing percentage of tria elements and error free meshing.