Create a 3D tetra mesh for the given three models using Hypermesh

Aim :

To create a 3D tetra mesh for the given three models, check for the geometrical errors and mesh with given element Quality criteria. After meshing the component assign 3D tetra mesh.

Objective:

3D Meshing:

Elements sizes: Min- 2mm,

Target- 5mm,

Max- 7mm

Tet collapse: 0.15

1. Create Teramesh for Housing Model 1

2. For the given models, Create 3D tetra mesh with 6mm element size. Model 2 and model 3

Procedure:

1. Open the model in Ansa before assigning the quality check for geometry issues and fix them.

Model 1

Model 2

Model 3

In this hub, model 3 I had to delete the gears to create a new surface.

2. After the geometry check In this model, there are four different components now create a 2D tria mesh is done using auto mesh.

model 1 with element size 5

Model 2 with element size 6

3. Before assigning the volume mesh we have to check for element min and maximum and fix it to avoid tet collapse.

4. After creating the 3D tetra mesh then check for collapsed cons and have fixed them manually by moving the surface of cons.

5. Check Tet collapse 0.15 I have fixed all the element fail issues in the 2D mesh and proceeded to 3Dmesh in model 1 and model 2 and model 3.

Model 1

The above image shows Tet collapse zero for model 1.

Model 2

The above image shows the Tet collapse was for two elements and fixed it manually by moving the element node in model 2.

Model 3

Created automatic tetra mesh in browser>utility>quick tetra and fixed the tet collapse manually.

Result:

Model 1

Model 2

Model 3

Conclusion:

The given three models 3D Tetra mesh is created and passed all the Tet collapse as per the given quality criteria.