Week 6-Meshing of Hood Challenge

MESHING OF HOOD CHALLENGE:

OBJECTIVE: To extract the mid surface, geometry cleanup and meshing of the given hood component using the given quality criteria checks

CAD MODEL:

PROCEDURE:

INNER EXTRACT

Step 1:

• Import the geometry in the Hypermesh workspace.
• Delete the solids
• Check the geometry for any missing surfaces.

Step 2:

• Delete the solids
• After deleting the inner extract solid part extract its mid surface.
• Here the offset + plane + sweep option is used for extracting the mid surface.
• After extracting the mid surface, geometry cleaning is done on the inner extract.
• Unnecessary edges are removed using the toggle edit command on quick edit so that they won't create problems while meshing.
• Property and material is assigned to the inner extract.

Step 3:

• Generating the mesh with the given quality criteria
• If any elements are failing for quality then cleanup tools option inside the quaity index can be used.
• Clean up tools used-----> element optimise, place node, split quad elements, quick edits etc
• Quality criteria-

S.N	Quality Criteria	Value
1	Aspect Ratio	5
2	Skewness	45
3	Warping	15
4	Taper	0.5
5	Min. Length	2 Units
6	Max. Length	8 Units
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	20
10	Max angle Tria	120
10	Tria %	10

• The target element size was set to 5.
• All quality criteria values were set according to the given values.

OUTER EXTRACT

THE ABOVE STEPS ARE REPEATED FOR THE REMAINING SUB COMPONENTS

HINGE REINFORCEMENT EXTRACT

LATCH REINFORCEMENT EXTRACT:

CONCLUSION:

The mid surface has been extracted for the given hood panel and the mesh was generated within the given quality criteria.