Week 8-3D Tetra Meshing Challenge

OBJECTIVE

1. Create a Teramesh for Housing component with the following quality criteria.

TetraMesh Generation Method: 2D to 3D Conversion

Elements sizes: Min- 2 Units, Target- 5 Units, Max- 7 Units

Tet collapse: 0.15

2. For the given model, Create a 3D Tetramesh with the following quality criteria.

TetraMesh Generation Method: Quick Tetra Mesh/ Volume Tetra Mesh

Target Element size: 3 Units.

Tet Collapse: 0.15

3. For the given assembly model, Create a 3D Tetramesh with the following quality criteria.

TetraMesh Generation Method: Quick Tetra Mesh/ Volume Tetra Mesh

Target Element size: 4 Units.

Tet Collapse: 0.15

PROCEDURE

TetraMesh Generation Method: 2D to 3D Conversion

1.After surface is cleaned manually here in first step go to 2D mesh panel and then automesh using element size as 5 by selecting the whole surface and create 2D elements.

2.Now go to 3D panel and click on tetramesh and there select tetramesh option and change comps to elems from drop down and select the whole 2D elements.

3.Alwas update tetramesh parameters as specified here as tet collapse value as 0.15. And now click on mesh.

4.Now the tetramesh will be created.

5.Check with the check elems panel and in there move to 3D and see whether the tetcollapse is 0% or not else go to tetra remesh and remesh the areas until the tet collapse value is satisfied.

fig1:model1 surface model and meshed model

TetraMesh Generation Method: Quick Tetra Mesh/ Volume Tetra Mesh

1.After surface is cleaned manually here in first step go to view>browsers>hypermesh>utility

2.Now a utility panel opens up, inside that select Geom/mesh.When it opens,it will display the geometry tools as well as mesh tools.

3.From mesh tools shown above, select Quick tetramesh.

4.Give the required mesh parameters as mesh size as 3 in the box displayed as below and press on mesh.

5.Now both surface mesh as well as volume mesh is done.Now inorder to delete the surface mesh , move to delete>by config>tria3>select and delete.

6.Thereafter to check the elems, move to check elems option and check the tet collapse and update the value.If needed remesh to reduce tet value to 0%.

7.Repeat the same steps for the third objective also with element size and tet collapse value updated.Or can go with volume tetramesh .

8.Inorder to go with volume tetramesh, move to 3D>tetramesh.

9.There select the tetramesh parameters and update the same as specified in the question and then move to volume tetramesh and select the whole component displayed and press procede.The volume tetramesh will be generated.

7.Same way the other models are also worked.

RESULT

Studied how to perform tetramesh in three diffrent ways.