Hi, i am a student participating in Formula SAE. I am trying to make a 2D mesh of our spaceframe in Hyperworks, I have encountered a problem.
I want to create a split at the intersection of these two surfaces

I have tried to split them using trim with surfaces.

However the surfaces won't split.

I have tried many things to overcome this, but I end up stuck with this problem. I would be grateful if anyone could help me with this issue.
Thanks !