Creating the 3D Tetra mesh on given models
AIM: Creating the 3D Tetra mesh on given models with given quality criteria.
Quality Criteria:
Elements sizes: Min- 2mm, Target- 5mm, Max- 7mm
Tet collapse: 0.15
Given Models:
Housing:
Piston Cap:
Suspension system components:
Procedure:
- After importing the model put it on the topo mode and check the geometry is fine or not, If not we can first clear the geometry then move on to meshing.
- we can check the geometry using the check geometry under the toolbar when we click on it it will show the errors like unchecked faces, needle faces, shraps edges, triplecons, single cons etc.
- For Clearing the geometry we should use the required options like geometry>Qucik edit.
- Make sure that you have a closed surface before doing the 3D meshing.
- There are three methods to do the 3D meshing (converting2D to 3D mesh )or(Direct 3D meshing in a 3D panel with tetra mesh parameters)or(volume mesh).
Housing:
- Converting the 2D to 3D meshing in the below model and fixing the tet collapse.
Tet collapse is one of the quality parameters, which will be checked while generating Tetrahedral elements. It can be calculated by measuring the distance of a node from the opposite face, then each of the four values will be divided by the Square root of the opposite face's area.
Piston Cap:
- Creating both 2D to 3D and volume tetra in the below model.
Suspension system Components:
- Here we are using the Quick tetra mesh using the utility browser in the given below model.
- Here we have to defeature the teeth because it is failing for the minimum quality.
- For mesh for this model, we have to do the Quick Tetra mesh this time as shown in the below images.
Quick tetra mesh:
- Here we have to clear the tet collapse by adjusting the height of the tetra element to remove the tet collapse manually.
- In this model, we used three methods to do the 3D Tetra mesh.
Conclusion: The given models are mesh with the given quality criteria for clearing the Tet collapse.
Learning Outcomes:
- Understand how to do tetra mesh using the three methods.
- Clearing the tet collapse.
- Quick tetra mesh.