Meshing of a Rear View Mirror using 3D elements using ANSA Preprocessor

AIM :

To remove geometric errors and perform volume mesh using tetra elements with the given quality criteria.

FILE : Rear_View_Mirror

PROCEDURE :

1. Open the given Rear-View Mirror model in ANSA v19.1.5 using the file>open.
   
   
   
   
2. Do topo operation on the whole model to join all the single cons. Change the element length in Mesh tools to 1mm to make the cad model more refined and visualize the geometry property. This is done using the Length under the Perimeter .
3. Run a geometry check on the model. This will show all the geometry errors that need to be cleared before meshing.
   
   
   
   The errors are resolved by using the tools under topo module. After cleaning the geometry errors, confirm by running the check again. After that we move on to the meshing section.
   
   
   
   
4. Before meshing, we will assign the required mesh parameter and the quality criteria.
   
   
   
   
   
   
5. The complete surface area of the model is meshed using tria elements such that the quality criteria are fulfilled. The surface is meshed using spot mesh and batch mesh and it is made refined or small errors are removed using the reconstruction tool.
   
   
   
   
   
6. Now seperate volumes were defined by using define>>volume option in the volume mesh module.
   
   
   
   
7. The list option will show the list of defined volumes. Now using Unstructured Mesh>>Tetra FEM , we can now perform tetra mesh on the defined volume by selecting the volume each time to each of the individual parts. A new Solid Pid is formed which consist only the volume meshed elements.
8. Check for the quality of the element in the hidden mode.
   
   
   
   

RESULT :

MESHED VOLUME :

• Performed a complete geometry clean up.
• Tetra meshing was done with satisfying the quality criteria.

Learning Outcome :

• Learned the way to use tetra meshing in curved surfaces
• The way produce a Quality satified Volume Mesh