Mesh Cleanup on 2D SHELL Elements using Hypermesh

Objective:

1. Download and Import the models with extension .hm
2. Clean up the given models
3. Extract the mid surface for the models
4. Now hide the original component
5. Using quick edit, edit the mid surface of the models
6. Fill the holes with dia less than 5mm
7. Create 2D mesh by keeping the element length as l=5mm and the limits as 3.5mm<l<7mm
8. Now move the mesh to the original component and assign thickness property

Case set up and Execution:

Model-1:

• Model 1 is imported 

• The imported geometry is cleaned up using various tools in quick edit

1. Toggle edge
2. Delete surface 
3. Add/remove points
4. Filler surface

• Now auto mesh is used to generate the mesh with element size as 5mm.
• The mesh is checked for quality and cleaned up using element cleanup.

• Now the mesh is moved to the original part from the mid surface.
• And thickness property is assigned.

Model 2:

Steps followed for this model are the same as the steps followed for model 1.

Model 3:

Steps followed for this model are the same as the steps followed for model 1.

Results and Conclusion:

• Models are cleaned up using quick edit
• The mid surface was extracted
• The 2D auto mesh was generated with 5mm as element thickness and the limits as 3.5mm and 7mm.
• The quality of the mesh is checked and cleaned up using element cleanup.
• The mesh was moved to the original model and thickness was assigned.

Thus, all the points mentioned in the objective are successfully carried out using Altair Hypermesh (Radioss) software.