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tension and torsion in ABAQUS

Hello!!

I am new in abaqus and I face a problem. I have a tube, which is stable on one side. On the other side, I apply tension in a first step and in a second step torsion. When I apply tension, I set 0 displacement on the other 2 directions, but in the second step there is displacement in all directions. Deactivating the first boundary condition in the second step, I saw that the results from tension are not satisfying. Do you know how can I solve this problem? Thank you!

You should be modifying (and not deactivating in this case) the boundary condition from the first step when you move to the second.

Thank you very much for the answer. I did your suggestion. The problem now is that finally, you cannot see the difference in stresses in one side due to tension, whereas if only tension is applied this is obvious. 

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