Week 3 - 2D meshing for Sheet metal
- Open Ansa and open the model.
- Assign Material property for the model.
- Check for geometry error, by going to Check-Geometry and click execute.
- Now it show all the error on the model. Select all and try using Auto Fix command.
- Some of them wont auto fix, like cracks and missing area. Try manually fix them.
- For Missing face, use offset and match them with existing face using Topo command and remove the single cons and patch them together.
- Perform Topo and fine command frequently to get better understanding of model and patching the single cons.
- Removal of a triple cons and patching up the single cons.
- Finally performing a last geometry check up on the model to see if any part is on error.
- Oriental change on some area.
- If all good save the model and moving on to dimension check.
- Check random dimensions and store the measurement. The dimension for the model is 0.75mm.
- Now to create the mid surface for the model of 0.375mm, which is half of the model area.
- After making the mid surface for the model. Set new PDI. With a name MS.
- As you can see even the main part model has no geometry error. The mid surface has some error expect single cons. We have to ignore single cons for mid surfacing.
- Now As the model is a symmetric model, Delete the half area and can be mirrored later after meshing one side.
- For Meshing they are some quality criteria needs to set. Use F11 key and set quality criteria.
- Mesh Parameters, Target length to 5 and Minimum as 2 and maximum as 7.
- Use Mesh-> Best -> Select for meshing method.
- As for now work on one side of the model and start removing unnecessary hot points and cons.
- Make the meshing the be under 2 to 7 and make every area as rectangular as possible for best output result for meshing.
- After completing the meshing on one side using Best -> Select under Mesh Generation tab, Using Reconstruct -> Select & Smooth under Shell Mesh, Cut under Marcus command, Num+/- under Perimeter command and Insert or Delete under Hot Point.
- Using all the above command and tools create a best meshing and under all quality criteria conditions.
- Use we transform -> copy and use symmetry tab and replace the other half and check if any quality criteria needs to meet and save the file.
- This components isn’t completely symmetric, so the alter surface is deleted and reconstruct for meshing and meet all the quality criteria.
- Finally save it.