Week- 5 - Solid meshing

Q.1) ANSWER

AIM- To do a pre-processing on the given Rear view Mirror component using ANSA.

OBJECTIVE-

• To check for any geometrical errors in the model.
• To generate a 2D mesh on the component according to the given quality criterions.
• To generate volume mesh on the component using tetra elements.

PROCEDURE-

1.1) Importing the model:

• The model is imported into the workspace using the command [file>open >and select the model to be imported]
• The model will be imported into the workspace.
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1.2) Topology Clean up:

• We topo the surface to clear the free edges and unwanted cuts.
• First, we split the model into 4 different components according to their respective properties and then we assign the given length parameter to them and topo the surface.
• We get the following results.
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1.3) Geometry Clean up:

• Before working on the model, we need to check whether the model has any geometrical errors or not.
• To check the geometrical errors, we use the checks manager available in the tool bar.
• In the check manager we select geometry option and click execute.
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• The geometrical errors can be fixed manually and automatically.
• In this case we fix the errors automatically by clicking the fix option.
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• Once the model has no error it will show green status as shown in the above image and we can proceed further.

1.4) MESHING:

• Before starting the mesh we assign the quality criterions and the mesh quality parameters.
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• Now we start meshing. There are various options which we can use for meshing but In this model we use spot mesh command. [mesh generation<spot mesh]
• We mesh each part separately for accurate mesh flow.
• The created mesh is then refined using the shell mesh command improve>reconstruct, smooth, reshape tool in the mesh module.
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1.5) Generating Volume Mesh:

• After the mesh is generated, we need to define the Shell object to solid and then mesh it.
• Tetra Rapid and Tetra FEM are used in order to define the mesh under volume. Here we have used the Tetra Rapid option to mesh.
• The volume property ID is defined separately with respect to the PSHELL ID.
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• Final image of the given component.
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1.7) LEARNING OUTCOMES-

• Meshing on the given component using tetra. Tria and ortho tria elements.
• Generating volume mesh for a solid model, how to define the volume.
• Learned how to zero off elements and clear Tet collapse errors.

1.8) CONCLUSION-

• Geometry cleanup, 2D volume meshing of the given Rear view mirror mode was successfully done.