Project 1 - 2D meshing on the instrumental Panel

Mid Surface Extraction and Meshing of IP Substrate using ANSA.

Aim:

To extract the mid surface and generate 2D mesh for the given model according to the given element quality criteria using ANSA.

Quality criteria features:

S. No	Quality Criteria	Value
1	Target Length	4
2	Minimum Length	2
3	Maximum Length	6
4	Aspect Ratio	3
5	Skewness	45
6	Warpage	15
7	Jacobian	0.7
8	Min. Quad Angle	45
9	Max. Quad Angle	135
10	Min. Tria Angle	30
11	Max. Tria Angle	120
12	Tria percentage	15

Procedure:

• For the project was IP substrate of vehicle in ‘.iges’ format. The model is imported into ANSA

Geometry cleanup:

• The given model is checked for geometrical errors using checks manager.
• The errors displayed is cleared using auto fix and tools from hot points, cons, faces & surfaces.

Midsurface Extraction:

• To extract the mid surface, the thickness of each feature is measured
• The mid surface of uniform thickness region of IP substrate model is extracted using tool offset option.
• The mid surface of features with varying thickness is extracted using tool faces>middle option.

Assigning shell property and thickness:

• The mid surface of IP substrate model is assigned with new PID

Meshing:

• The quality criteria & mesh parameters values are entered.
• The perimeter length value assigned is 4 mm.
• Using spot mesh option each macro area is selected and meshed.
• The quality criteria are achieved by using tools like cut, join, past, Num +/-, reconstruct, smooth, split and swap options.
• The tria percentage is reduced by deleting unwanted construction lines without losing the feature.
• The smooth mesh flow is achieved by creating small macro areas and restructuring the mesh.
• The shell to solid feature is enabled to ensure the feature capturing is matching.

Learning Outcomes:

• To fix the geometrical errors for given complex model.
• To extract mid surface for the given complex model.
• To mesh the given model by satisfying the quality criteria.

Conclusion:

In this project, I have generated mid surfaces using different options available in ANSA. To defeature and do line adjustments in some areas. Did topological clean up. Understood about transparency mode and the concepts related in generating mid surface for different features. To achieve better mesh flow using smooth, reconstruct, swap, paste, move options. Successfully generated mid surface and meshed whole Instrument panel using ANSA.

Drive link:

https://drive.google.com/drive/folders/1pvL9Od4gEI337mDrM2Ezpq-hlRxh_8C2