Week 6- Challenge
OBJECTIVE: To mesh the given component (Hood) according to the quality criteria mentioned below and assigning thickness to it.
Target Element Length = 5mm
| S.N | Quality Criteria | Value |
| 1 | Aspect Ratio | 5 |
| 2 | Skewness | 45 |
| 3 | Warping | 15 |
| 4 | Taper | 0.5 |
| 5 | Min. Length | 2mm |
| 6 | Max. Length | 8mm |
| 7 | Min angle Quad | 45 |
| 8 | Max angle Quad | 135 |
| 9 | Min angle Tria | 20 |
| 10 | Max angle Tria | 120 |
| 10 | Tria % | 10 |
Given CAD model Images:
PROCEDURE:
1) A optistruct file was opened in hypermesh, the hood geometry was imported and all solids were deleted from the component.
2) The midsurfaces was extracted from all the components separately and checked for any defects and appropriate geometry clean up was done.
3) 2D mesh was done on the smaller parts first i.e, Latch and two hinges and Remesh was carried out wherever it was required, quality check was done and appropriate quality clean up was done to achieve the quality criteria mentioned.
4) The inner panel and outer panel were symmetric components , so 2D mesh was done to only one half of the component which was geometrically symmetry to the other half.
5) The components was divided symmetrically by using surface edit option: Trim with surface edit or Planes (shift+F9).Once it was trimmed half of the surface was deleted.
6) 2D mesh was done part by part by dividing whole surface into parts by using quick edit option.
7) Once the entire half surface was meshed , quality was checked and appropriate quality clean up was done to achieve the quality criteria mentioned.
8) The other half of the panels was obtained by using reflect option in geometry option.
9) Connectivity was achieved by using the option Shift+F3 ( Tools- Edges) and connectivity of the free edges was achieved by using F3 option (nodes).
Results:
2D mesh of the latch
2D mesh of left and right hinge
2D mesh of outer Hood Panel
2D mesh of inner Panel
All meshed components
CONCLUSION:
2D meshing of sheet metal components was done as per the quality criteria given successfully.
I have attaced the .hm file of the components