compression of cylinder 2

[pradeepburla]

Hello,
I have a small problem where I have to compress the cylinder.
For example if I have a cylinder of diametrer 1 cm ,I want to reduce the diameter of the cylinder to 0.5cm.I donot mind even if the length of cylinder increases.
I cannot constraint any face of the cylinder as I want size reduction even at the edges. Can someone recommend a solution to this problem. I am using abaqus to solve this problem.
Thank You.

 

[DrBwts]

That is a huge deformation!

You can apply pressure to the outside surface of the vessel.

 

[Mustaine3]

You can use stabilization or soft springs to prevent rigid body modes.

 

[cooken]

I think the question is more about boundary conditions..?

You can fix all nodes in a cross section in the axial direction, then use symmetry to fix a line of nodes lying on a plane in the normal direction. For example:
X-axis parallel to pipe axis - choose any cross section, or one of the ends to apply BC in X
Y-axis intersects pipe at top and bottom - apply BC in Z
Z-axis intersects pipe at sides - apply BC in Y

Or you can use a reference node with a kinematic coupling through a cylindrical csys, leaving radial (DOF 1) free. Or you can use a distributing coupling.

 

[pradeepburla]

I solved the problem using your suggestion to use Cylindrical coordinate system and contrain z and theta leaving the radial dof free.

Thanks a lot DrBwts,Mustaine3 and cooken .