Week 3 - 2D meshing for Sheet metal

Aim : To remove the geometrical errors and to extract the mid surface and then mesh the midsurface with the given quality criteria for the given hood modle.

Procedure :

• To toggle the geometrical errors using check manager
• Errors can be removed by using Topo module>Faces>new>delete>cut Cons>paste>Release >project
• 
• Geometrical errror free modle is abovementioned

• To extract the midsurface using Faces>offest or faces>mid surface>skin
• Here mid surface extracted using Faces>Mid surface>skin option

The extracted mid surface is shown below

• Then SETPID for the extracted mid surface and mention its thicknes

Meshing:

• Fix the Target length, Mesh parameter, Quality criteria
• Cleaning the mesh surface

If any unwanted features lines and Hotpionts are there remove them using

Mesh module>Macros>cut

Hotpionts>Insert or Delete options

• Now by using Mesh Generation>Best ,mesh has been generated surface by surface on the given Hood modle as shown below

• If the mesh flow is not proper or if there is any quality issues use Mesh Generation>Reconstruction , Shell Mesh>Smooth options
• And in fillet region two rows of mesh should be maintained for the proper mesh flow
• If there are any backward trias or rotating trias can be removed by using Elements>Split

Mesh will be genrated as shown in the below modle

Conclusion : Hood modle as gone through mid surface extraction and element quality criteria