3D tetra meshing using Hypermesh

Objective:

To create 3D meshing (Tetra mesh) for the given components (Housing, Crank case, Chassis assembly) Element sizes: Min: 2mm Target: 5mm for housing and 6mm for crank case and chassis assembly. Tet collapse: 0.15

Procedure: (Housing and Crank case)

• Change the user profile to Radioss
• Import the housing model into the hypermesh
• Check the model by going to topo mode for the presense of solid if present then delete it by Pressing F2 > solid > displayed > delete entities
• Toggle the unnecessary edges by quick edit panel > toggle edge
• Before creating 3D tetra mesh we need to create 2D surface mesh by pressing F12 button
• After creating 2d surface mesh check the quality for the min length by going to Tools > Check elements > min length
• After this we need to convert the 2D mesh into the 3D mesh by going to 3D > Tetramesh > elements > mesh

3D tetra mesh for housing

3D tetra meshing fo crank case

• After tetra meshing check for the Tet collapse by pressing F10 if there are failed elements try to make it to zero by increasing the length or height (F4)

Tet collapse for housing

Tet collapse for crank case

• Tetra remesh tool can be used to remesh the failed elements

Procedure: (Chassis)

• Import the Chassis model into the hypermesh
• Check the model by going to topo mode for the presense of solid if present then delete it by Pressing F2 > solid > displayed > delete entities
• Toggle the unnecessary edges by quick edit panel > toggle edge
• Before creating 3D tetra mesh we need to create 2D surface mesh by pressing F12 button
• After creating 2d surface mesh check the quality for the min length by going to Tools > Check elements > min length
• After this we need to convert the 2D mesh into the 3D mesh by going to 3D > Tetramesh > elements > mesh
• We can create volume tetra mesh without deleting the solid by going to 3D > tetra mesh > volume tetra mesh > solid > displayed > mesh

• After tetra meshing check for the Tet collapse by pressing F10 if there are failed elements try to make it to zero by increasing the length or height (F4)

Conclusion:

• In this challenge we learned how to create the 3D Tetra mesh using Hypermesh and learned about tet collapse and its importance in 3D meshing.