Assignment 1-2D Meshing Challenge

Assignment 1-2D Meshing Challenge

Aim: - Extract mid-surface and mesh the components.

Objectives: -

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

Procedure: -

1. Firstly, import the model.

Command: -{File>>open>>model}

Given Model: -

Part 1 : -

2. Now, view the model in topology mode & clean the geometry.

-Clean those areas where red lines as well as yellow lines are present.

3. After that, create mid-surface.

Command: -{Geometry>>mid-surface>>Auto-extract>>select-surface>>extract}

-Mid-surface.

4. Now, toggle the unnecessary lines and fill the holes less than 5 mm in diameter.

-measure the diameter of holes

Command: - {Geometry>>distance>>thee-point}

-As the radius is 0.9972, so the diameter is 1.9944 = 2 mm.

-Fill the holes by using filler surface.

Command: - {Geometry>>quick edit>>filler surface}

-toggle unnecessary lines.

5. Now, the mesh, the model.

Command: - {2D>>auto-mesh>>select surface>>element size 5>>mesh}

-set criteria for meshing.

-Set the maximum & minimum size.

-Rotate the node for better mesh flow.

Command: - {Tool>>Rotate>>select nodes>>rotate}

-align the node to the geometry.

Command: - {Tool>>translate}

Final mesh: -

-Always view mesh element in element quality as shown in above image.

6. Now, create the property & assign the thickness.

-Also create material.

7. Check the free edges.

Command: - {Tool>>edge>>select element>>find edges}

-View the model in 2D Detailed Element Representation.

Final Model: -

-Now, do this procedure to other remaining models.

Part 2: -

-Clean the geometry.

-Extract mid-surface.

-Mesh the component.

-Create property and assign thickness.

-Create material.

-Assign properties & material.

-View the model in 2D Detailed Element Representation.

-Final Model: -

Part 3: -

-Clean the geometry.

-Extract mid-surface.

-Mesh the component.

-Create property and assign thickness.

-Create material.

-Assign properties & material.

-View the model in 2D Detailed Element Representation.

-Final Model: -

Learning Outcomes: -

1. Learn to clean the geometry.

2. Learn to extract mid-surface.

3. Learn to create 2D mesh.

4. Learn to assign proper thickness, by creating a property.

Conclusion: -

In this 2D meshing challenge, we clean the geometry, extract the mid-surface & mesh the given model with given quality criteria.