The result of my pipeline model in ABAQUS is become abnormal and i don't know the reason of that, please someone help me.(see the figure)?

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Khalil Mansouri

Hello

It may be that your analysis don't reach the first critical load of buckling in your model (the Mises stress is too low to cause buckling i guess it about 15MPa)

Which abaqus procedure are using

Good luck

M.Reza Jamshidijam

thank you.

Tamer Qaimari

give me detailed input about your Model. i will try to give a help.

Valentina Mercuri

Did you check the correctness of the boundary conditions, load values and the consistency of unit of measure?