Week 3 - 2D meshing for sheet metal
Aim-For the given Hood model, Generating the mid surface for all the components and checking the geometrical errors and mesh the mid surface with the given element Quality criteria.
Objective-For given quality parameter garneting the mesh on the hood model.
Below are quality parameter,
|
Sr no. |
Quality critaria |
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 |
Procedure-
1.Import the model- In the left corner go to open and import the model.
2.Geometry clean up-After importing the model go for geometry clean up in tool box there is check manager in that geometry and execute that after that it will shows the error then select all right click fix it or go manually also.
3.Separate the parts- By using the !not command and lock them or properties.
4.Midsurface- After separating the parts go for midsurface in faces option select skin and select the part and enter it will give the midsurface.
5.Assign the property-Assign the property for midsurface by selecting the setpid.
6.Assign the length for mesh nodes -In the mesh in perimeters select length and select the part and assign length which is 5.
7.Mesh parameters -After that give the mesh parameters i.e max length ,min length and average value.
8.Quality parameter-Then give Quality parameter as per given.
9.Mesh-In the mesh generation there is option called best select and select the part for better mesh go partwise divide them. After go for reconstruct the mesh and smooth the mesh.
Outer shell with meshing-
Inner shell with meshing-
Subparts with meshing-
For symmetrical parts devide the half section and do meshing and join them by using transform command and for best mesh remove cons near the fillet to avoid the quality parameter-
For best mesh give even nodes to the hole by using number command-
And remove the trias near the holes because it will fail after giving the load beacuse of stress concentration-
Complete model with no off-
Outcomes- Understanding the basic command in ansa mid surfacing ,meshing,mesh generation and asiigning property.
Conclusion -Given model is successfully satisfyng the given quality parametrs .