Challenge

Week 5 Challenge : Surface wrap on Automotive Assembly

SSuruguri Vinay24 Sept 2022

AIM: To clear the geometrical errors and delete surfaces which are unwanted for Surface wrap. After clearing geometry, Merge all the components (Engine, Gearbox and Transmission) and perform surface wrap.

Target length for Wrap = 3 mm

Take away:

Cleaning up the geometry.
Using tool - MERGE.
Using tool - SURFACE WRAP.

GEOMETRY CLEAN UP:

1) Engine:

First we have to load the geometry.

As seen from the above figure (engine), there are lot of unwanted regions of leat interest.
This unwanted regions must be removed.
This can be solved by setting proper view and deleting the unwanted regions by using UNIVERSAL DELETE option.

These errors can be eliminated by setting a view and then delete.
Best practice is to hide the needed PIDs and then select the unnecessary features.

In this case, triple cons are not considered as an error.
After removing all the unwanted materials we can display the full geometry.

This looks much more cleaner than before.
Still got some single cons to remove near the pipe regions.
We need to delete the all the unwanted surfaces of pipes in the geometry.
These kind of overlapped surfaces must be removed.
Care muct be taken while deleting those features.
Once the clean up is done, try to run a geometry check. You might find few warning or penetration errors.
Finally the engine geometry looks like as shown below.

2) Gearbox:

First we have to load the geometry.

Compared to Engine it has lot less errors in the geometry.
Initially, run a topo check.
Start with hiding necessary PIDs.
This model does not have many errors.
Any way we have to clean up the geometry.

3) Transmission:

First we have to load the geometry.

At the end we will clean up the transmission.
Run a topo check.
Start by hiding the required components by PIDs.
Delete unnecessary features.

MERGING ALL THE THREE COMPONENTS:

Before performing surface wrap, we need to merge all the three components.
Navigate to FILE and select MERGE option - select components one by one.
After merging the geometry looks like.

Then we need to close all the holes of the whole geometry, to perform the surface wrap perfectly.

Go to the properties and delete the unwanted PID'S.
And we get upto 120 PID's.

SURFACE WRAP:

Surface Wrap:

Go to mesh deck.
Navigate to ELEMENTS.
Select WRAP and select CONSTANT LENGHT.

Double click on empty.

Click on Untitled.
Target Length = 3 mm.

elect Mesh in the same dialogue box,set the shell elements as trai, wrap mode as node out of structure and proprtiy assignment as Assign properties from structure.