Week 3 - 2D meshing for sheet metal
AIM:- To mesh the given hood component using given quality criteria.
Procedure:- The hood model has four component are as follows-
1. Latch (1.2 mm thick)
2. Hinge (1.2 mm)
3. Inner panel (0.75 mm)
4. Outer panel (0.75 mm)
|
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 |
- First import the given hood componen
- Assign length for perimeter and macros
- At first component did not get proper resolution, so that assign the length of perimeter and macros as target length 5mm. This help us to see a fine resolution of the components and also get a proper mesh flow.
Geometry check:- After this check the geomtery for cleanup.
Creating Property ID:- Now assign property id for the given components, assign thickness by using measuring tool, assign material card.
- Extracting the midsurface of the components using auto and manual midsurface tool. For auto midsurface (topo>faces>midsurface), for manual midsurface (topo>faces>offset).
MESH PARAMETER:- Now get into mesh module to mesh the parts, at first assign the mesh and quality criteria as given below (target length 5) select the mesh parameters tab.
QUALITY CRITERIA:-
- Now prepare the component for meshing by give a proper surface cut to get a proper mesh flow and easy way to mesh.(mesh or topo>faces>cut).
- Start meshing, use best mesh option to get a good mesh. (Mesh>mesh generation>best).
- Here we go for edit in meshing by using many tools like reconstruction, split,join,swap,paste to remove the opposite trias, back to back trias and rotational quads in the mesh. Use these tool to removw the unnecessar trias mentioned in trias management rule and rotational quads.
- To check the shell elements to solid as mention thickness in property id (utilities>quality criteria>presentation parameters>draw shell as solid).
Conclusion:- The hood components were meshed as per the quality criteria and got a proper mesh flow and assigned proper thickness for the components.