Week 4

Procedure:

1. Geometry Cleanup:

Import the CAD Geometry. Do Geometry cleanup by cheking the geometry for cracks, triple cons, single cons, etc. Change the length by macros & perimeters as 1mm in mesh module.

2. Midsurfacing:

Using auto midsurfacing is not working properly in this model due to the teeth, ribs & other such features. Hence used manual midsurfacing processes like Offset, middle, etc.

For midsurfacing :

• Measure the entire model thickness which is different at different portions.
• Then try to start with the outer portion at the top using manual offset program.
• Do over all large surface midsurfacing.
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• Then go for the tooth midsurfacing using the middle multiple option.
  • Here selection of surfaces as per colour is very important. Try to get different surfaces in different colours else it will not work.
  • 
• Then do midsurfacing of the threads.
  • For this we have to take a middle of two conns of thread.
  • Use the cons to curve to convert this curve to the curve.
  • Then project this curve on the base surface.
  • This way we will get the reference cons for generating surface using conns option.
  • After generating remove all curves & unwanted surfaces (Parent).
  • 
• Midsurface using middle-multi surface option.
• Extend these ribs to the base midsurface and make sure it intersects.
• Remove extra extended surfaces of this ribs once it gets intersected properly.
• 
• Take the midsurface of the remaining portion at the top of the cap model.
• Check for the orientation of the model if it is proper or not.

For Meshing:

• Now go to mesh module .
• Enter the mesh parameters in the mesh toolbar as mentioned in the objectives of this challenge.
• Use best mesh option and select whole model.
• Now Check for off elements of the meshed model changing the view.
• Correct these off elements using mesh quality check manager and using fix option.
• Also after this do manual fixation for remaining macros.
• Using num, reconstruction, reshape, etc. options.