Week 3 - 2D meshing for Sheet metal
AIM
To extract the mid surface and then mesh the component with given quality parameters and assign the thickness on a hood component.
OBJECTIVE-To assign the property on each part with their parent component thickness and then mesh the component with target size 5mm and as per given quality parameters.
| Sr. No | Quality Criteria | Value |
| 1 | Target/Average Length | 5 |
| 2 | Minimum Length | 2 |
| 3 | Maximum Length | 7 |
| 4 | Aspect | 3 |
| 5 | Warpage | 15 |
| 6 | Skewness | 45 |
| 7 | Jacobian | 0.7 |
| 8 | Minimum quad angle | 45 |
| 9 | Maximum quad angle | 135 |
| 10 | Minimum angle tria | 30 |
| 11 | Maximum angle tria | 120 |
| 12 | Tria percentage | 15 |
PROCEDURE-The hood component geometry is open in the Ansa for Meshing, the file is open with STP format, The hood component to extract the middle surface and mesh the component
- After importing the geometry do the topo and geomtry check and clear the geomtrical error
- after geometrical error taken mid surface of the model by using offset command
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Meshing: It is the finite element analysis process that divides the component at finite surface by giving the nodes and the element to solve for mathematical equations in analysis software.
To adapt mesh the component changed to the length of the target element size of meshing which 5mm. and the quality parameters value is given in the quality parameter option
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Failed elements and Fixing them-The elements are failing for minimum and maximum length they are fixed by re-meshing it or moving them in a particular direction, this option clears the failing criteria.
Trias is fixed by splitting them and pasting at a particular area to have proper mesh flow.
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RESULTS-The mesh is obtained significantly on each component fixing them by using several options in the mesh panel. as the symmetric surfaces are deleted and meshed on single surfaces but the as a result on the outer panel the mesh is not connected as it used with auto paste option but it not working as well.But the elements that are failing are fixed and the quality result is obtained with less trias percentage
