Week 6-Meshing of Hood Challenge

#6 Week Challenge-Hypermesh for FEA plastic and Plastic Applications

Aim: To Mesh the given component and assigning the thickness to the component by giving the target Element Length as "5 units" by using the quality criteria as below:

Quality Criteria Value :

1.Aspect Ratio= 5

2.Skewness= 45

3.Warpage=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

11.Trias % =10

Import the geometry;

1. Click on the import icon on the main menu bar.
2. Select the import geometry and choose the file, click on import.
3. Then the file will be imported and will be shown in the graphical area as below,

1. 

Delete the Solids:

1. Hide the surfaces of the other components, except the outer extract.
2. Click on the delete symbol on the tool bar over the menu bar.
3. Select the solids from the dropdown menu and select displayed.
4. Now the solids have been selected and click on the delete entity to delete the solids.
5. Now the solids have been successfully deleted.

Extract the Mid-Surface:

1. Click on the mid-surface from the geometry menu bar.
2. Select the surfaces and click on extract.
3. The mid-surface of the component will be extracted.
4. Hide the original component and rename the middle surface that is extracted.
5. Thus, the mid-surface can be extracted and seen on the graphical interface.

Performing Auto-Cleanup:

1. Use the auto-cleanup tool to clean the component surface.
2. Click on the auto-cleanup from the geometry menu bar.
3. Select the surfaces and click on cleanup.

Dividing the surface:

1. Click on the quick edit from the geometry menu bar.
2. Click on the toggle edge and select the lines to be toggled.
3. Toggle the unwanted lines on the outer mid-surface.
4. Click on the split surf node in the same menu.
5. Select the nodes to create lines to divide the surface for convenient meshing.
6. Click on the bar over the menu and set them to “By Topo & By Element quality”.

Meshing:

1. Ensure the criteria file is applied and the values are properly applied.
2. Click on Auto-mesh from the 2D menu in the menu bar.
3. Set the element size to 5, select the element type as mixed(quads & tria’s) and select the surface to be meshed and click on mesh.
4. Mesh will be created on target surface.
5. Adjust the number of nodes on the either of sides, so that make sure rotational quads are not formed on the surface.

Meshed Surfaces:

The Output: