Week 8-3D Tetra Meshing Challenge

AIM:

To perform 3D meshing for the given component with a mentioned quality criteria.

METHODOLOGY:

Methodology to perform 3D meshing for the given component with a mentioned quality criteria.

1. IMPORT MODEL
2. DELETE SOLIDS
3. GEOMETRY CLEANUP
4. MESHING
5. CONVERTING 2D TO 3D MESHING
6. CHECKING TET COLLAPSE

PROCEDURE:

1. IMPORT MODEL:

• Import the given model into hypermesh.
• Importing model may not be possible if the file format is not supported by the hypermesh.

2.DELETING SOLIDS:

• Before generating 2D mesh for the components then the solids should be deleted.
• It can be done by using the delete tool and select solids and select all to delete all solids from the component.

3.GEOMETRY CLEANUP:

• After importing the model the main process is geometry cleanup.
• In some cases if the model is imported to hypermesh due to some graphical issues the geometry changes may occur, So geometric cleanup plays an important role.

housing model

• Remove all unnecessary lines from the model.
• Check if any surface is missing or overlapped.
• If any surface is missing, create a new surface over there by using a surface tool or filler surf tool.

MODEL 2

• If two surfaces are not stretched together then use a toggle edge tool to stretch together.
• By using the toggle edge tool the feature lines can be suppressed for the better mesh generation.

MODEL 3

4.MESHING THE COMPONENT:

• For the given housing model to perform the meshing select 2D.
• In 2D by using AUTOMESH tool mesh is generated.
• Before meshing, always assign the quality criteria.
• For creating TETRA MESH for the model, firstly trias meshing should be generated.
• Select the whole surface to generate trias mesh and proceed with the meshing.

HOUSING MODEL

MODEL 1

MODEL 2

5.CONVERTING 2D TO 3D MESHING:

• For converting the 2D trias meshing to 3D tetra meshing go to 3D tools.
• Under 3D tools select tetramesh, under tetra mesh tools there are tools to create tetra mesh, tetra remesh, parameters, volume tetra and refinement box.
• For converting 2D to 3D mesh select tetra mesh and select the elements from the model to convert to 3D.
• After performing the tetra mesh the 3D meshing of the model will be ready.
• By multiple ways tetra mesh can be generated. Directly we can create tetra mesh without creating the 2D mesh.

6.CHECKING TET COLLAPSE:

• For checking the TET COLLAPSE we can directly access the check menu by F10.
• The tet collapse should not exceed by the given value.
• To solve the tet collapse we can use the TRANSLATE tool from tools.
• By adjusting the height the tet collapse can be solved.

LEARNING OUTCOMES:

• Trias meshing
• Tetra meshing
• Complete 3D meshing

RESULT:

3D Meshing for the given components with a mentioned quality criteria had done completely.

HOUSING MODEL

MODEL 1

MODEL 2