Project 2
Objective:To perform the meshing as per the given criteria for floor panel geometry.
Procedure:
1)Open the given model in hypermesh with radioss solver.
2)As the geometry is having uniform thickness throughout the section perform auto cleanup tool to clean the geometry.
3)Delete all unnessecory components from the model.
4)Now select outer surfaces to offset manually.
5) To offset the surfaces go to geometry-surface edit -offset and offset the surfaces to measured thickness.
6)The midsurface is shown as bellow
7) Now on midsurface fill all unnessecory holes and surfaces and toggle the edges also.
8) After cleaning the midsurface divide the whole geometry into four equal parts and mesh them one by one.
9)Meshing criteria:
Follow the given mesh criteria
| 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 |
The meshed model is as bellow
10) To assign thickness to midsurface create first material i.e m1 elastic and assign the density,young's modulus and nu values.
11) Then create property as p1_shell and assign the measured thickness value.
Conclusion:
1)The sheet metal BIW part is having uniform thickness through out hence all outer portion of the model is used for automidsurface extraction.
2) And all inner surfaces are manually offseted to achieve proper midsurface.
3) And the geometry is meshed to given criteria.
Google drive link:https://drive.google.com/file/d/1g2gFqm75ZFuLMBZUchYPKMWgJ2QJSAkg/view?usp=sharing