Week 12:Project 2-Meshing of Rear Wheel Holder challenge

Aim :- Meshing of Rear Wheel Holder challenge. Meshing should be undertaken with the following element parametrs.

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

CAD MODEL :-

Procedure

1. Post downloading the model from the dash board, the model was scrutinised. It was observed that the model was the base thickness of the sheet metal was 0.75- 0.811 mm.

2. After that the midsurface extracted from the model with the following command Geometry>> SURFACEEDIT>>OFFSET.

3. post extraction of mid surface the topological correction was performed on the model .

4. After this the parimeter file and criteria file was updated in the hypermesh GUI.

5. The above step was undertaken to make sure that the the operation under batch meshing was finer and good.

7. Post meshing the mid surface the thie quality correction was undertaken. Few of the places where mesh flow was not proper was corrected with the the help of rebuild mesh command.

8. Final step was to assign the peroperty and thickness to the model. This was done with the help of MESH>>ASSIGN>> MIDMESH THICKNESS>> midsurface AND elements were uploaded in the pannel and the task was completed.

The Procedure wise image of the subject model is as follows :-

a Midsurface and topology cleanup.

b. Meshing

c. Thickness & Property assignment

Results

1. It is observed that total of 41841 elements were created on the subject model. out of these created elements 1524 elements were trias ie(3.6%).

2. The Few off elemenst were created beaces they were failed to pass the min tria angle criteria there fore they were kept un effected. if required the same can be supressed as per industrial requirement.

3. in the end a total of 11 failed elements were retained.

Final Model Image