Week 8-3D Tetra Meshing Challenge

AIM: To perform 3D tetra mesh on the given models.

Objective:

- To create a tetra mesh for the given component.

- To do the solid mesh cleanup.

- Perform the different solid mesh techniques to remove the errors.

PROCEDURE:

Model 1(Housing):

Housing model:

- As per the requirement the model has to mesh. Prior to mesh geometry cleanup has to be done in order to remove the regions where the elements might fail for a minimum length.

- Such areas have to be toggled and changes should be done as per the requirement. Some of the changes are shown below.

Initially Mesh the surface using 2D tria elements

• Check for minimum and maximum element size error from and clear the same
• Below the image shows there no min and max element size error.

Perform 3D tetramesh using the 2D tria elements, 3D>Tetramesh>select all the elements

• Check tet collapse for 0.15, in tools>check elements>3d>tet collapse, fix the errors by tetra remesh or manually by moving the nodes
• Below image shows there is no tet collapse error

Model 2:

Procedure:

• Import the geometry to the software.

• In this model there is no minimum and maximum element size criteria
• So used the volume tetramesh method to mesh the model
• The given model is surface, so used 3d>tetramesh>volume tetramesh> surface, gave the desired element size and gave tet collapse value in tetramesh parameter
• The given model is meshed and fixed all the tet collapse error
• Below image shows the final result

Model 3 :

Steps carried out :-

• Import the model to the software, look for any geometry error.

• There are 4 different components in this model, mesh each the component in different methods
• Casing 1 is meshed using volume tetramesh method
• Casing 2 is meshed using quick tetramesh method

• Check for only tet collapse error in this model and fix the same
• Final output is shown in below image

Learning Outcome:

- To perform the auto mesh for the given solid component.

- Implementing different ways of performing auto mesh.

-Fixing of tet collapse elements.