Week 8-3D Tetra Meshing Challenge

OBJECTIVES:

The main objective of the challenge is to perform the 3D mesh on the given 3 models with the required element size and Tet collapse in hypermesh

GIVEN DATA:

Model 1:

Element size as Min-2, max-7, Target-5, and Tet collapse - 0.150

Model 2:

Target as 3 and Tet collapse - 0.150

Model 3:

Target as 6 and Tet collapse - 0.150

PROCEDURE:

• Import the 3 model files on the hypermesh
• There are three methods available for making the 3D tetra mesh

👉Model 1 using the Surface method(2D Mesh Needed):-

• Delete the solid if any present in the model
• Delete >>> Solids

• 2D mesh the surface of the component with the given element size
• 2D >>> Automesh >>> Using trias

• Check the elems size in the 2D mesh

• Perform the 3D tetra mesh - 3D >>> Tetramesh >>> Mesh

• Check the elem failure of Tet collapse in 3D tetra mesh and clear if any present

• Finally do forgot to delete the 2D mesh - Delete >>> Element >>> by Config >>> Tria3

👉Model 2 using the components method(No need of 2D Mesh):-

• Delete the solid if any present in the model
• Delete >>> Solids

• Try to create the 3D tetra mesh by using the following steps - 3D >>> tetramesh >>> Tetramesh >>> Comps >>> Mesh
• If an Enclosure error came then go with -  View >>> Browser >>> Hypermesh >>> Utility 

 

• In the Project tree - Utility >>> Goem/Mesh >>> Quick Tetra mesh >>> Comps >>> Mesh
• Fix the issue, If any Tet collapse is present in the mesh

👉Model 3 using the Volume Tetra mesh(No need of 2D Mesh):-

• Parts present in the Model are Hub, Casing (2Nos), Central Hub
• This method is used to form 3D tetra mesh directly using solid/surf, we don't have any control over the mesh
• 3D >>> tetra mesh >>> Volume tetra >>> Surf >>> mesh

• Input the element size as 6 unit

• Fix the tet Collapse, if any present

RESULT:

Hence, the three models have successfully meshed as the quality criteria and I learned a lot about how to form the Tetra mesh by various methods.

Model 1:

Model 2:

Model 3: