Week 5 Challenge : Surface wrap on Automotive Assembly

Aim/Objective :

To do surface wrap over assembled parts (engine,transmission and gear box)

Target length for Wrap = 3mm

Procedure :

• First the model is loaded on to ANSA
• Unwanted surface are deleted without damaging the outer shape of the geometries.
• Single cons are resolved mainly here as it would affect negetively on the surface wrapping.
• After cleaning up the geometry from the unwanted surfaces it is then solved.
• Then whole three geometries are merged together to form the required system.
• Surface wrapping tool with constant length of 3mm is chosen from the meshing interface.
• It is then named and the requir

  1. Open Engine model in ANSA

  File--> Open --> (..).ansa

  2. Check for unwanted parts for geometry clean-up.

  Hide the top surfaces using not option and delete inside surfaces.

  

  Delete dough-nut shaped surfaces in model

  

  Delete surfaces attached to the outside surfaces.

  

  

  Delete the floating faces in model

  

  Check for any left-over surfaces and delete.

  

  2. Open the transmission model in ansa.

  Perform geometry clean-up

  

  3. Open gear in ansa.

  Perform geometry clean-up

  

  Merge all 3 models.

  Open Engine part.

  File -->Merge--> select transmission

  

  File--> Merge--> Gear

  

  

  Fill all the remaining holes which affect surface wrap

  

  Perform Surface wrap

  Mesh-->Elements--> Wrap --> Constant length.

  target length as 3 mm.

  

  Select the contents:
  
  Compress the unnecessary PID using Compress--> Ok.

  

  Run to perform surface wraped parts are selected(all) and the run button is pressed to start the surface wrapping.

  

  

  

  

  

• RESULTS

  

  

Geometry file Link:

https://drive.google.com/file/d/1mfLfZh48euNJDXeunCpnq6SO36ZvZigk/view?usp=share_link

• Learning Outcomes

  Geometry cleanup

  Geometry merging

  Surface wrapping

  Conclusion

  1. Surface wrapping was run successfully on the given parts.

  2. Surface wrap is effective for outside flow simulations where the volume between the body and wind tunnel is required for flow over the body simulations.

  3. Surface is easier to perform since it does not depend on the quality of the wrap on each material as we are not interested in physics in the body.

  4. Effective surface wrap is achieved on the given body for a given mesh length of 3mm.