Assignment 1-2D Meshing Challenge

ASSIGNMENT 1 – 2D MESHING CHALLENGE

Aim: To extract the mid surface and mesh the components for the given models.

Given Models:

Quality criteria:

S. No	Quality criteria	Value
1.	Target Element Length	5
2.	Min Length	3.5
3.	Max Length	7

Steps Involved:

1. Importing model and performing geometry cleanup.
2. Extracting mid surface and assigning thickness.
3. Meshing the geometry with in the given quality criteria.

Procedure:

1. Importing Model and Performing geometry cleanup:

• To import the geometry, go to file >> Import >> select the file >> Import.
• After importing the geometry, the geometry is checked for any missing surfaces or triple cons. If there are no errors present in the geometry then the geometry is ready for the mid-surface extraction.

2. Extracting mid surface and assigning thickness:

• To extract the mid-surface, go to geom >> mid-surface >> select any extraction option >> select the surface >> extract. In this challenge offset + plane + sweep is used.
• After extracting the mid-surface, it is checked for any geometrical errors like needle faces, missing surfaces and triple cons. If any of the errors present then it should be rectified immediately.

• Now the properties like thickness, material etc. need to be assigned to the mid-surface. To assign the properties, right click in tab area and choose create and then property.
• Now all the properties are entered in the property tab and the properties are assigned to the respective mid-surfaces.
• To assign the properties to mid-surface, right click on the component name and then select assign and select the respective properties which needs to be assigned.

3. Meshing the geometry within the given quality criteria:

• Before generating mesh, the geometry is cut into smaller rectangles for good mesh flow.
• To generate mesh, go to 2D >> automesh >> select the surface >> mesh. To edit the mesh for proper flow, the elements are selected and meshed again.
• If any elements are failing for quality then cleanup tools option which is present in quality index can be used.

Conclusion:

For the given models, mid surface is extracted and meshed within the given quality criteria.