Week 5 Challenge : Surface wrap on Automotive Assembly
CHALLENGE-5: Surface Wrap on Automotive Assembly
AIM:
To perform surface wrap on the given automotive assembly.
OBJECTIVE:
- To perform geometrical cleanup of given assemblies separatly
- To merge all the components and to perform surface wrap of the same.
PROCEDURE:
1. Open the geometry in the ANSA software. Cleanup the surface of geometry by deleting unwanted parts and faces present on the geometry. As surface wrapping is generally carried out to study the flow over a surface So the main importance should be outside surface rather inside parts and surface.
2. Close all the holes present in the geometry otherwise while wrapping it might create disturbances. Below diagram shows final geometry before assembly.
3. Repeat step 1 and 2 for all the geometries.
a. Engine Geometry

b. Transmission Geometry

c. Gear Geometry

4. From file section select Merge and select other geometric file and click ok. Thus it create an assembly of different parts. The below figure shows the merged assembly.

5. Now move to mesh session and select Wrap option from element drop down. In wrap select constant lenght as in this it is a constant length surface wrapping.
6. Provide target length and smooth factor as 5 and 0.5 respectively. Smaller target length help to create more accurate wrapping though it might take time. Then provide contents by selecting all the PIDs and click ok. The final surface wrapped model is shown in the Result and Discussion session.
RESULT AND DISCUSSION
Surface wrapping is generally carried out to study the flow over a surface so, the main focus should be outside surface rather inside parts and surface. The below figure shows the surface meshed model of the given automotive assembly.

After surface meshing in order to check whether the wrap obtained is correct it is advised to check the inside of the wrapped surface. If it create a pure hollow inside (as shown in below figure) thus a proper surface wrapping is obtained.

CONCLUSION
A study has carried out on surface wrapping and surface wrapping of a given automotive assembly has successfully completed.
Link to download file: https://drive.google.com/file/d/1j8T4lcuMGouXpYyKYL6Pc7Ro9dQ7N_jr/view?usp=sharing