Challenge

Week 8-3D Tetra Meshing Challenge

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

PROCEDURE:

Model 1(Housing)

Step 1:-

Import the given model and check for any geometry error
In this model there are few missing surface like shown in the below image
Fill the surface by Surface option or quick edit> filler surface option, like shown in below image

Step 2:-

Next step is to defeature some edges which might fail for minimum length quality criteria, like 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

Step 3:-

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:

Step 1:-

Import the geometry to the software
Look for any geometry error in the cad, this model contains few unstitched edges like shown below
The above errors will be fixed by toggle edge option, like shown in the image below

Step 2:-

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
Central hub is meshed by 2d tria element and convert the same to 3d tetramesh
Hub will be meshed one side and be reflected to the other side like shown below
Check for only tet collapse error in this model and fix the same
Final output is shown in below image

CONCLUSION:

Ship work like this
in your own course.