Hi,
I'm pretty new with Patran and I'm confronted with the following problem:
I have a large (infinite...) medium with two spherical holes in it which are close one to another. One of these holes is expending (Loads/Pressure) and I'm interested in the forces acting on the second hole.
For the beginning I was able to solve the problem in 2D by building a large disk with two small circular holes and assigning Loads/Displacement=[0, 0, 0] to the nodes on one of the holes and Loads/ Pressure=... on the free edges on the other hole. Everything went fine.
The real challenge is the 3D model.
1. The only way I was able to build a meshable solid was by using Create/Solid/Primitives and Modify/Extract two small spheres from the large medium.
2. I created the Mesh (different Mesh Seeds on the interior surfaces/edges and on the exterior ones).
3. Now, I have to apply the Loads by SELECTING the nodes on one of the interior spherical holes.
For a coarse mesh I used Arbitrary Clipping, I isolated as much as I could one of the interior spheres, I created a group of nodes by selecting everything was visible and then I removed one by one the nodes which weren't exactly on the surface of the hole.
For a fine mesh this seems to me to be a titanic work.
Do you have another solution for easily selecting the nodes on the interior sphere?
Thanks!