QUESTION :-

For the given Hood model, Take the mid surface for all the components after checking the geometrical errors and mesh the mid surface with the given element Quality criteria. (Refer to the table below for the Quality criteria)

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
12	Tria Percentage	15

ANSWER :-

1. Import Model

Open the given file (Hood_model1.stp) in ANSA, the given hood model has 4 components:

• Inner Extract (0.75)
• Outer Extract (0.75)
• Hinge (1.2)
• Latch (1.2) of uniform thickness.

2. Geometry Clean-up:

The components are checked for geometry clean-up using Checks > Geometry and clean up the errors using auto fix and use topo tools like new face, delete and topo, etc. to achieve 100%.

3. Mid – Surface Extraction:

• Manual mid surfaces are extracted by selecting the faces of each component by offset option by giving the distance half of the thickness.
• For symmetrical components, only part of the component is extracted.
• Mid Surface Geometry is again checked for errors.

Outer Extract:

Inner Extract:

Latch Extract:

Hinge Extract:

4.Assigning Property and Thickness:

The mid surfaces of the components of the hood are assigned with new PID and their thickness.

Hinge :

Outer Extract:

Inner Extract:

Latch:

Hood Model Final Meshed Image: