Week 8-3D Tetra Meshing Challenge
AIM :
To mesh the given model in 3D tetra mesh and submit in the given quality certiria .
QUESTION GIVEN :
- 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
- 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
- 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
SOFTWARE USED :
- Hypermesh student version .
MODEL 1 :
- Mesh the given housing model in 2D and conervert into 3D .
PROCEDURE :
- Import the model from the saved area to the hypermesh window , and work on radosis format for 3D componets .
- First delete the soilds because we dont want them we are goinb to work on the surface only of the model .
- Preform the geometry cleanup in the given model remove the fillets below the given min lenght 3mm and sharpe edges for the model and ensure the model surface is cocmpleted in all sides if not fill the surface with
manual mid surfacing tools .
- Toogle the unwanted lines in the model to improve the flow of the mesh .
- Now preform the 2D mesh with tria elements for 5 mm on the model .
- Now go to 3d - tetramesh - select the elements by displaced - mesh - enter .
- There some tweaks to be made before we preform the 3D mesh set mesh as remeshable in tetramesh , then in tetramesh prameters can the tet collaspe to .200 and finaly can change duenley to interpolation the
dropdown box .
- After these changes in the parameters we can do the meshing on the model .
- Now check for the given quality certiria on the question all the quality should be done on the model so we can produce a good mesh for the post processing stage.
- We can reduce the faling element by various methods by remeshing , adjusting the element manually for every single element present are finally we can preform smoothing operation .
- Follow these process until get zero failure on the model .
- fFinally safe the model .
MODEL 2 :
- Preform an volumetric mesh over the given model .
PROCEDURE :
- Import the IGES flies to the hypermesh window .
- Clear the soilds form the model, And now we are going to preform the mesh over the model in the 3d mesh directly itself as it is a vlomertic mesh we going produce a simple meshing of the comp in 3D .
- By this mesh type we can easly mesh the part and no quality is checked here apart form tet collaspe ,And we do have any control over the mesh coz we are doing a direct 3D mesh .
- This process is used when we need a 3D mesh over a component just for simple testing process if we are doing a complicated one this will not give a good result as there is no control over the mesh
so its used rare only .
- Check for the tet collaspe in the model .
- Try remeshing the model until we get zero error on tet collaspe .
- Onces its done cross check for quality failure if all are ok save the model .
MODEL 3:
- Preform an volumetric mesh over a turbo charger unit
PROCEDURE:
- Import the model to the hypermesh window and work on radioos format for 3D model .
- As we have too many componets in the assemble we can hide all and work on them one by one OR we can deleted apart form the current component and work over them as per our requriment .
- Deleted the soilds on the every part of this model we work as we need surafces only .
- Select the displaced surfaces and preform a 3d volumertic mesh over it for 3mm and mesh it .
- slected 3d elements as tetra and 2d as tria .
- Check for the tet collapse and corect it properly till we have no errors left.
- Repeat this for all parts in the assemble and complete it and save it as individual parts are a complete model .
Result :
- Thus the given all model are mesh as per the requriements and quality certiria