Expanding a straight cylinder in a curved tube
Expanding a straight cylinder in a curved tube
(OP)
Hi,
i am trying to expand and deflate a cylinder (modelled as a shell) within a deformable curved tube. I am expanding and deflating the cylinder using displacement boundary conditions and a cylindrical csys. The analysis works fine except for the balloon which returns to its initial position when deflated whereas I want it to deflate to the centre of the deformed tube. Any ideas on this problem?
i am trying to expand and deflate a cylinder (modelled as a shell) within a deformable curved tube. I am expanding and deflating the cylinder using displacement boundary conditions and a cylindrical csys. The analysis works fine except for the balloon which returns to its initial position when deflated whereas I want it to deflate to the centre of the deformed tube. Any ideas on this problem?





RE: Expanding a straight cylinder in a curved tube
ex-corus (semi-detached)
RE: Expanding a straight cylinder in a curved tube
As a guess if you turn on stabilization and expand the balloon with a pressure load then you might get your desired results. I am guessing the stabilization is needed to remove rigid body motions because the balloon will be smaller than the bent tube.
I hope this helps.
Rob Stupplebeen