Week 3 - 2D meshing for Sheet metal
Objective
For the given Hood model, Take the mid surface after checking the geometrical errors and mesh the mid surface with the given element Quality criteria. (Refer to the table below for the Quality criteria)
IGES file has a sheet in it. it needs to be meshed according to the rules. provide a thickness to the sheet.
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
Cad model image
Procedure with required images
geometry clean up was done first. hot points and cons section were used.
after this, topology was done to join all the adjacent surfaces and topology was done to achieve this.
length of the shells were decided first. then best shell was created. care was taken to avoid triangles and go for quadrilateral meshing for most of the part. but triangles cannot be completely avoided. triangular meshes were kept remote from the boundary edges.
proper meshing was achieved like this.
meshing options like free best mesh, remesh, reconstruct, reshape, smooth were used.
Results and Final model image
the following is done-
Generating Midsurface and geometry clean up on the given component
Generating mesh on the given component with low tria concentration and proper mesh flow
model passes all the given quality parameters and submit the completed model
Optistruct mesh generated in radioss format
output CAD saved in /iges format
.ANSA file submitted