Week- 8 - Solid meshing

                                                             CHALLENGE 12: SOLID MESHING

 

 

OBJECTIVE:

To conduct geometry cleanup and volume mesh the Rear-view mirror component CAD model as per the given quality criteria.

CAD MODEL:

     

                                            

PROCEDURE:

1. Importing CAD model:

• Open the geometry model. Use Topology option to clear the cons and check the model orientation using Entity Drawing Style in Menubar.

        

2. Geometrical Clean-up:

• Check for geometrical errors using Checks Manager option. Execute the geometry after selecting the required options.

                          

• Clear the errors using auto-fix option in Checks Manager from Tools menu.

          

• Rerun the geometry check again for zero errors.

          

•  Store Lock the unbounded geometry parts separately.

   3. Quality Criteria and 2D Meshing:

• Change the Length Parameter to value 1 for both Perimeter and Macros.

         

•  In Shell section, select and enter the minimum and maximum element length value required in the Quality Criteria box from Utilities menu.

         

•  Input the required mesh length and minimum length in Mesh Parameters from Utilities menu.

         

•  Select Classical Mesh option from Mesh module.
• Use suitable option from Mesh Generation menu.
• Ortho-tria from Options List can be used for meshing curved areas for better result.

                                  

• Tria from Options List can be used for meshing flat areas due to less complex mesh requirement.                     

                           

• Mesh the features sequentially and use Shadow Drawing Style to view the mesh quality deviations.
• Correct the mesh flow and quality using Mesh options, if required.

         

     4. Volume Meshing

•  In Solids section, select Collapse and enter value required in the Quality Criteria box from Utilities menu.

        

• Select and add the part required in the Volume Mesh.
• We can specify mesh type as Tetra Rapid or Tetra FEM.

        

• Mesh the selected volume. 
• Volume can be viewed using Bounds option from Drawing Styles menu.

         

• Check for Collapse quality in the created volume.
• Similarly add each part in the volume mesh.

         

                     

• Mesh all the parts and check for Collapse quality.

        

     5. Final Model:

        

RESULTS:

The given Rear-view mirror component has been completely meshed using tetra volume mesh and maintaining all the given quality criteria. The mesh formed is an Unstructured mesh.