2 Replies Latest reply on Sep 18, 2012 3:42 PM by Alec Chalmers

Restraining Vessel at Depth

Alec Chalmers Sep 18, 2012 11:17 AM

I am having trouble properly restraining a fairly simple cylindrical vessel with end caps when attempting to simulate the effects of the pressure at 3 km depth in saltwater (4390 psi). I have made all the contacts bonded and added a fixed restrain on the OD of the cylinder after having the study fail for large displacements and still get the large displacement error. Any tips?

Re: Restraining Vessel at Depth

Phil Perlich Sep 18, 2012 1:37 PM (in response to Alec Chalmers)

Have you tried a global bonded contact?

It is possible that the external pressure is so great that the vessel boundary is deforming that much. Try running with 1 psi external pressure.
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- Re: Restraining Vessel at Depth
  
  Alec Chalmers Sep 18, 2012 3:42 PM (in response to Phil Perlich)
  
  I am using a very simplified model with global bonded contact. I can get the model to run with symmetry along one of the principal planes and a roller/sliding restraint along the symmetry plane and restraining one end face, which removes any reaction at that face. I still think this gives realistic results for the other end cap and that half of the tube.
  
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