Week 3

WEEK 3 CHALLENGE

OBJECTIVE

In this challenges we have to extract mid-surface For the given component, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the components, the thickness has to be assigned.

S.No	Quality Criteria	Value
1	Target/Average length	5
2	Minimum Length	2
3	Maximum Length	7
4	Aspect	3
5	Warpage	15
6	Skewness	45
7	Jacobian	0.7
8	Minimum Quad Angle	45
9	Maximum Quad Angle	135
10	Minimum Tria Angle	30
11	Maximum Tria Angle	120
10	Tria Percentage	15

PROCEDURE

• Import the hood model into the ANSA and check the property, thickness etc..

• then give topo - faces - orient to orient the faces.

• Then go to utilities – checks – geometry check to do geometry check weather any free edges, cracks on the surface of the components.

• Then extract auto mid-surface by topo – faces – mid-surfaces – skin.

• Then create new PID for the mid surface of the components and assign thickness.
• then topo the surfaces to achieve the mesh flow.

• Before meshing the components give perimeter length and macros length, by mesh – perimeter – length.
• Then give the mesh parameters in utilities – mesh parameters.

• Then give quality criteria by clicking F11.

• Then to achieve the quality use mesh – shell elements – reconstruct/smooth.

CONCLUSION

In this challenges learnt how to extract mid-surface of the sheet metal component and mesh them with quality criteria.