Week_8_Plastic Model_1

1. AIM: Mesh the Plastic model in Hypermesh.

2. OBJECTIVES OF THE PROJECT:

As per the given Quality criteria mesh the Below model.

S.N	Quality Criteria	Value
1	Target Element Length	5 mm
2	Aspect Ratio	3
3	Skewness	45
4	Warping	30
5	Taper	0.5
6	Min. Length	3 mm
7	Max. Length	7 mm
8	Min angle Quad	45
9	Max angle Quad	135
10	Min angle Tria	30
11	Max angle Tria	110
12	Tria %	15

Procedure:

1. Import the given geometry of the B-Pillar in Hypermesh

Delete the solids in the geometry. Check for topological errors such as missing or distorted faces. The imported geometry was clean and thus where was no need for topology clean-up.

The component is a B-Pillar with a number of ribs of varying thicknesses. Generate the mid-surface for the geometry by a suitable method. Manual mid-surface was used for mid-surface extraction.

The mid-surfaces generated were assigned their respective thickness by defining properties with correct thickness and then assigning these properties to the corresponding mid-surface component.

The quality criteria were defined by pressing F10 on the keyboard and editing the settings.

Now we have to mesh the Mid-surface generated. The automesh tool was used for this purpose. The target element length was set as 5 mm and the mid-surfaces were modeled using quad and tria elements.

1. 
2. 
4. Tria elements were avoided as far as possible. The mesh was cleaned for good quality. The element connectivity is also checked.
5. To visualize the mesh with thickness, turn on the detailed 2d element representation option.

Result:

1. The B-Pillar was modeled.
2. The correct thicknesses were applied.

Learning Outcome:

1. Midsurface generation for a component having a variable thickness.
2. Assigning variable thickness to all the generated mid-surfaces.

REMARK \ NOTE

the picture shows the quality criteria affected in rib area. Due to the min length of component is 3 ,where the length of rib is less than min length. so quality affected in certain area.