tension and torsion in a tube

[Lenimech]

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!

 

[jj89]

Could you up load a few pic or the CAE to understand better what happen??

 

[Lenimech]

The first picture is when only tension is applied and the second when torsion and tension together. So, we don't see the same displacement due to tension in the second picture. Do you know how to solve it? Thank you!

 

[Lenimech]

tension only here: