Challenge

Week 3 - 2D meshing for sheet metal

AAnjali Datar11 Jun 2022

Aim- For the given Hood model, Take the mid surface for all the components after checking the geometrical errors and mesh the mid surface with the given element Quality criteria.

S.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
10	Tria Percentage	15

Step to follow

1.Import given cad model to ansa.

2.After importing cad model need check for geometry clean up.

3.Seperate out the parts containts in hood assembly

4.Midsurface generation

5.Assigning PID to midsurface

6.Generate good quality mesh flow with given quality criteria.

Process-

1.Cad model import in ansa

2.Geometry cleanup

There are two ways to clean up the geometry either manual or ansa can auto fix the issues.

Issues which can not be auto fix in ansa need to resolve manually.

Here we can go for autofix.

Re run geometry cleanup and confirm all issues resolve or not

3.Identifing differnt parts in hood assembly

inner hood panel

latch

outer pannel

Hinges

4.Midsurface generation

Midsurface generation is done by either manual midsurface generation or automatic way

In manual mid surface generation we use offset command from faces command group and select face to offect and assign the offeset distance as Part thickness /2.

In automatic way we have to use midsurf command from faces group to generate midsurface.In that need to select skin and midsurface get generated.

midsurface of inner hood