Assignment 1-2D Meshing Challenge

OBJECTIVE :

Carry out the geometry cleanup operation on the given 3 files.

• Practice
• Clip Repair
• Mounting Bracket

There should not be any free edges, convert all of them into refine geometry.

• Clean the geometry.
• Extract midsurface.
• Clean midsurface geometry.
• Ignore holes less than dia 5mm.
• Create 2D mesh with target length 5mm, min 3.5mm max 7mm.
• And assign proper thickness, by creating a generic property.

PROCEDURE :

Import the geometry;

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

Defeature:

• Surfaces that fail for the minimum element size can be defeatured.
• Here the surface fillets fail for the minimum length
• Enter the minimum and maximum radius and select defeature.
• Now the surfaces will be defeatured you can see the status and change in surfaces in graphical area.

Extract the Mid-Surface:

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

Performing Auto-Clean-up:

• Use the auto-clean-up tool to clean the component surface.
• Click on the auto-clean-up from the geometry menu bar.
• Select the surfaces and click on clean-up.

Meshing:

• Ensure the criteria file is applied and the values are properly applied.
• Click on Auto-mesh from the 2D menu in the menu bar.
• 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.
• Mesh will be created on target surface.
• Adjust the number of nodes on the either of sides, so that make sure rotational quads are not formed on the surface.

Element Quality:

• Check the element quality for failures.
• Perform the element optimization from the quality index.
• Re-mesh group of elements if necessary.

Edges:

• Check for the free edges by clickin edges from the tools panel.
• Select the component and the red lines indicate the free edges.
• Edges at the open end are excluded, edges in the middles of the elements has to be cleared by replacing the nodes and saving the equivalence.

Assigning the Thickness:

• Check the thickness of the parent geometry.
• Create property and assign the thickness to the property.
• If the thickness is varying separate them to different collectors and create multiple properties.
• Assign the properties as per the thickness.
• To check the thickness switch to 2D Traditional Element Representation.

Same for the other components:

The Output: