Week 8-3D Tetra Meshing Challenge

#8 Week Challenge Hyper-mesh for FEA Plastic and Sheet Metal Applications

Task_1: Create a Tetra-mesh for Housing component with the following quality criteria,

Method of generation: 2D to 3D Conversion

Elements sizes:

Min- 2 Units,

Max- 7 Units

Target- 5 Units,

Tet collapse: 0.15

Import the geometry;

1. Click on the import icon on the main menu bar.
2. Select the import geometry and choose the file, click on import.
3. Then the file will be imported and will be shown in the graphical area as below,

2D Meshing:

1. Click on the 2D from the menu bar.
2. Click on auto-mesh and enter the target element size as 5 units.
3. Select the type as tria elements, give the minimum and maximum element length in the criteria file.
4. Click on the surfaces and select the displayed surfaces, make sure the component is made as current component.
5. Click on create mesh, check for the elements failed and re-mesh the elements.

2D Tria to 3D Tetra Mesh Conversion:

1. Click on the 3D from the menu bar and select the tetra-mesh.
2. Click on the tetra-mesh parameters and enter the min, max and Tet collapse values.
3. Click on the tetra-mesh and select the elements as displayed and click on mesh.
4. Click on tools and check elements(F10) and check the min, max, Tet collapse for the elements failed.
5. Go to the delete the 2D tria elements on the surfaces.
6. Mask the elements and you can check the 3D Tetra elements.

The Output:

Task_2:

Method of generation: Quick Tetra-mesh (using utility tab)

Import the geometry;

1. Click on the import icon on the main menu bar.
2. Select the import geometry and choose the file, click on import.
3. Then the file will be imported and will be shown in the graphical area as below,

Quick Tetra-mesh using Utility panel:

1. Click on the view from the display menu >Browser > Hyper-mesh > Utility.
2. Select the Geom /mesh from the utility menu that appears.
3. Click on the quick tetra mesh and select the components, enter the mesh size as 3.
4. Click on mesh and the appears as new collector in the component tree.
5. Check the Tet -collapse for the elements failed.

The Output:

Task_3:

Method of generation: Quick Tetra mesh / Volume Tetra-mesh

Import the geometry;

1. Click on the import icon on the main menu bar.
2. Select the import geometry and choose the file, click on import.
3. Then the file will be imported and will be shown in the graphical area as below,

Volume Tetra-meshing:

1. Click on 3D mesh from the menu bar and select the Tetra-mesh.
2. Click on Tetra mesh parameters and enter the value of Tet collapse.
3. Click on Volume Tetra-mesh and enter the target element size as 4.
4. Select the components, make them as current and click on mesh.
5. Click on mask(F5) and select the elements and check for the 3D tetra-mesh elements and then click on unmask all.
6. Click on Check elements(F10) and check for Tet collapse elements failed.
7. If there are any elements failed click on re-mesh and select the elements as displayed and click on mesh.
8. The final output should have 01 elements failed for Tet collapse.

The Output: