Week 8-3D Tetra Meshing Challenge

AIM:

To create a 3D meshing for the given 3 models by using the respective parameters.

Solution:

1. Create Teramesh for Housing

• Import housing (2).stp file by using import geometry.
• Remove fillet less than 5 mm by using defeature command.
• Prepare geometry by using replace point, toggle edge, split surface etc from quick edit panel.
• Below image shows models after geometry cleanup.

• Completed 2D meshing by using following path:

        2D > automesh > select surface > element size=5 > element type = trias  > mesh.

• After completion mesh checked quality of 2D mesh.
• Parameter used for element check: Elements sizes: Min- 2mm, Target- 5mm,Max- 7mm.
• Remesh the elements those failed in above element check parameter.
• Used 3D mesh panel after checking of 2D mesh quality.
• Completed 3D meshing by using following path:

        3D > tetramesh > select all 2D tria element > mesh

• Checked tet collapse = .15 for 3D element.
• Those elements failed in tet collapse are remesh or increase distance between nodes to achieve tet collapse 0.15.

RESULT:

• Below image of model after completion of Tetramesh.

 2)Create Teramesh for Model2 (TETMESH_PM.hm)

• Open TETMESH_PM.hm in hypermesh.
• Remove fillet less than 5 mm by using defeature command.
• Toggle highlighted free edges by using toggle edge command.

• Prepare geometry by using replace point, toggle edge, split surface etc from quick edit panel.
• Supress hole having diameter less than 5 mm.
• Below image shows models after geometry cleanup
• Completed 2D meshing by using following path:

        2D > automesh > select surface > element size=6 > element type = trias  > mesh.

• After completion mesh checked quality of 2D mesh.
• Parameter used for element check: Elements sizes: Min- 2mm, Target- 6mm,Max- 10mm.
• Remesh the elements those failed in above element check parameter.
• Used 3D mesh panel after checking of 2D mesh quality.
• Completed 3D meshing by using following path:

      3D > tetramesh > select all 2D tria element > mesh

• Checked tet collapse = .15 for 3D element.
• Those elements failed in tet collapse are remesh or increase distance between nodes to achieve tet collapse 0.15.

RESULT:

• Below image is model after completion of Tetramesh.

 

3) Create Teramesh for Model4 (Chassis_assy.hm)

• Open Chassis_assy.hm in hypermesh.
• Given chassis is symmetric, therefore I have divide chassis into left part and right part
• Geomtric cleaning did on only left side of part.
• Remove fillet less than 5 mm by using defeature command.
• Toggle free edges by using toggle edge command.
• Prepare geometry by using replace point, toggle edge, split surface etc from quick edit panel.
• Supress hole having diameter less than 5 mm.
• Below image shows models after geometry cleanup.

                   

       

 

                          

• Final left side of assembly after geometry cleanup.

          

-Completed 2D meshing by using following path:

     2D > automesh > select surface > element size=6 > element type = trias  > mesh.

• After completion mesh checked quality of 2D mesh.
• Parameter used for element check: Elements sizes: Min- 2mm, Target- 6mm,Max- 10mm.
• Remesh the elements those failed in above element check parameter.
• Used 3D mesh panel after checking of 2D mesh quality.
• Completed 3D meshing by using following path:

        3D > tetramesh > select all 2D tria element > mesh

• Checked tet collapse = .15 for 3D element.
• Those elements failed in tet collapse are remesh or increase distance between nodes to achieve tet collapse 0.15.