Week 6-Meshing of Hood Challenge

AIM: Follow the below-mentioned quality criteria, mesh the component given below and assign thickness:

Target Element Length = 5 Units

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

PROCEDURE:

• Import the cad model in hyperrmesh.
• there will be 4 parts and 4 components
• open each component one by one and delete there solids of the component.
• set view mode to topo.
• extract midsurface using mid surface option.
• 
• after mid-surface extraction, go to auto cleanup.
• 
• after doing auto cleanup go to 2d auto mesh. set criteria in the criteria file setting.
• mesh the component with the target element size given in question.
• 
• use rebuild mesh and quit edit and edge edit tool as and when reuired.
• use the smooth option to smooth the mesh flow

LATCH MECHANISM:

• 
• after mid surface extraction.
• 
• split the mid suraface using surace edit -->trim with surface/plane
• mesh only half for the symmetrical part and for the unsymmetrical part mesh completely.
• after doing half part got to tools mask the unsymmetrical part . and using tools --> reflect , reflect the elements in the respective direction.
• 
• after reflection go to tool-->edges--> preview equivalence-->equivalence. give tolerance
• 
• after this refected mesh will be joined .
• create the prorety as per thickness and assign it.

INNER PANNEL

• 
• for getting good flow suppress these edges.
• and connect using node to node .
• inner panel after meshing
• 

HOOD

• 
• before meshing
• 
• after meshing.

CONCLUSION: By doing this challange we have learned how to mesh sheet metal component using hypermesh.