Week 6-3D Tetra Meshing Challenge

Model 1 :

Aim :

Create a Teramesh for Housing component with the quality criteria given in the question.

Procedure :

• This is the CAD model of housing component.
• In this model there are two components.
• One can be seen in yellow colour and another in blue colour.
• In the question it is asked to mesh the component by 2D to 3D conversion method.
• Hence, first create 2D tria elements on the surface of the model.

• Here, we meshed the component with min and max size parameters given in the question.
• Before converting the model to 3D ensure that first all the 2D elements are free of any quality error.
• Then, go for tetra meshing.
• Open 3D page --> tetra mesh module --> tetra mesh.
• And select all the elements and mesh.

• This is tetra mesh with all tet collapse O. Hence, not even a single element is failing for quality.
• In the same way mesh another component of the model.

• This image shows the 2D elements generated on the surface.

• Here, is the all 2 components meshed with tetra elements.

MODEL 2:

AIM :

Create a 3D Tetramesh with the following quality criteria.

Quick Tetra Mesh/ Volume Tetra Mesh

Target Element size: 3 Units.

Tet Collapse: 0.15

Procudure :

.

• This is the CAD image of given model.
• For this model we will follow volume tetra mesh method, where we will be meshing the component with volume tetra mesh directly.
• Here, we are not needed to mesh the model first with 2D mesh and then doing 3D mesh.

• This is the meshed solid model of the component.

Aim :

Mesh the given model with given quality criteria.

Procedure :

• This is the CAD image of given component.
• We need to mesh this component by Quick tetra mesh / volume tetra mesh method.
• Initially clean up the geometry so that no element should fail for tet collapse.
• Then, mesh the component with either volume mesh method or quick tetra mesh method.
• Check for tet collapse elements and if found any failed elements clear them.

• This is the meshed image of model.

Results :

At the end of this challenge we learnt to mesh the model with tetra elements. About tet collapse and how to clear elements for any failure.

Again different methods of tetra meshing, one is 2D to 3D transformation. And another is quick tetra mesh or volume mesh.