Week - 4 - 2D meshing for Plastic components

OBJECTIVE: To extract the mid surface for all the cap model after checking the geometrical errors and mesh the mid surface with the given element Quality criteria.

CAD MODEL IMAGE:

PROCEDURE:

• The given model of the cap is imported by the open model command.

• The model is checked for geometrical errors first.

• Now that the model is free of errors, manual mid-surfacing of the model can be done.
• The mid-surface is generated by the manual mid-surfacing method.
• The thickness of each regions are measured and then the surfaces are offsetted to the middle.

• The same procedure is done afor all the regions.
• the midsurface is then joined and corrected by making new faces in the gaps.

• The mid- surface of the ribs is generated by creating new face by cons command.

• Now to create the mid surface of the tread portion, the middle curve of the thread is generated, the it is projected on to the mid plane.
• Then the mid surface is generated by using new face command.

• Similarly, the mid surface is generated for all the regions.

• Now that the component is ready for meshing, meshing is done by best mesh command.
• The quality criterias and meshing parameters are set at first.
• Then meshing of the component is done region by region.

• For ensuring proper mesh flow, the elements are selected and remeshed using reconstruct command.
• Similarly all the regions are meshed.

• Then the tria elements are taken care of by split command.
• Next, the quality criteria are given as input and checked.
• The quality criterias are checked and corrected.
• Now properties are assigned to each regions according to thickness.

• After assigning the properties, the model is visualised in 'draw shell as solid command', to compare with parent geometry.

• Thus the meshing of the component is successfully completed and checked.

RESULTS: Mid-surface generation for the cap model after checking the geometrical errors and meshing of the component with the given element Quality criteria is successfully completed

FINAL CAD IMAGE: