Week 5

MODEL:

https://drive.google.com/file/d/1o3say05IWze17gCEoACgXbSJWVATZWbt/view?usp=sharing

Aim:

• To check for the geometrical errors and mesh the given component with tetra element for stated Quality criteria.

Procedure:

1. Make a topo for all of the component to stitch any surfaces and check for ‘Geometry’ errors from the ‘checks’ option.
2. Auto fix or manual fix the errors for ‘needle faces, triple cons, cracks,single cons’ etc.
3. Define quality criteria for ‘min length, max length, collapse’ and also define mesh parameters
4. Go to the mesh panel and define length for perimeters and macros to 1 to check the quality and define element size.

Surface Meshing

1. Do necessary adjustments on the construction lines such as capturing the tip of fillet etc as shown below to produce a smooth mesh flow under the criteria .
2. After the arrangement .Proceed with spot mesh for all the property elements step by step.
3. Clear any quality failure immediately from the ‘shadow’ view using ‘ Reconstruction, spilt, swap’ etc commands.

Solid Meshing

1. Isolate one property from the four property from ‘property box’
2. Go to the volume mesh panel and define a volume for the property by ‘Define-manual’ and select the property.
3. Defined Volume is seen on ‘List’ command under ‘Volumes’ . Create a name mesh it with ‘Remesh-Tetra FEM’
4. Set a PID for the volume separately from ‘List-Set PID’ as ‘PSOLID’
5. Check for Quality error and correct it.
6. Repeat the above process for all the properties individually as shown below.
7. FEA and Volume can be viewed separately by disabling the options in the ‘visibility’ panel in the left bottom.

Learning Outcomes:

1. Step by step / surface by surface meshing is done to minimize the quality error for smoother mesh flow.
2. Smoother mesh flow is achieved when ‘Ortho tria’ elements is used on edges and curved surfaces
3. As it may seem Volume mesh is not useful for ‘NVH’ analysis is used for analysis such as strength , durability etc.

Conclusion:

In Conclusion, Different strategies can be used in each step by the user for convenience to achieve better, efficient mesh work overall.