Week 5 Challenge : Surface wrap on Automotive Assembly

Aim:
The aim of this project is to surface wrap an automotive powertrain. The CAD models to which can be found here.
1)Engine

2)Gearbox

3)Transmission

Objective:

The objectives of this project are,

• To check for the geometrical errors and delete surfaces that are unwanted for the surface wrap.
• To Merge all 3 models and perform surface wrap after clearing geometry.
• The target length for the Wrap should be set to 3 mm.

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

MODELS:

1)Engine:-

2)Gear Box:

3)Transmission:-

• Go to Classic Mesh --> Element ---> Wrap ---> Constant Length.
• Double click on 'Constant wrap Octree'.

• Double click on 'parameters'.

• Castellation - Give target length 3mm

• Enable Nodes out of structures.
• Enable Assign properties from structure.

• Provide Any name like 'Full-Wrap' and click on 'OK'

• Now i cancel this pop-up window and Click on properties and we can see the properties and delete the PID's of deleted surfaces.

• so in order to see how many PID, go to Compress tool which can be seen right upper of the pop-up window.
• To Delete the PID's go to compress tool and click on OK and all the unnecessary PID's delete.

• Click on green button to perform operation and click on OK.

• The one pop-up window will open and hit on RUN button.

• Then the below model is coming out.

Results:

Learning outcomes:

• Technique to remove extensive excessive parts which is difficult to remove indivudually.
• By hiding the main parts and deleting the rest.
• Learning the merge option to merge different components.
• Selection criteria to perform surface wrap.
• Wrap function and its parameters needed to perform mesh wrap.

Conclusions:

• Surface wrap is achieved on the given powertrain components.
• 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.
• 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.
• Effective surfce wrap is achieved on the given body for a given mesh length of 3mm.