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MPC Constraint in Abaqus

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Nicholas.Gianotti

Nicholas.Gianotti

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Apr 6, 2022
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Hello,
I am having some troubles in Abaqus with some MPC constraint and BC.
I have kind of a ring, where the external surface is fixed, and the internal surface should rotate on the circumferential direction, without moving in radial direction. It is actually a torsion experiment.
image1_nhuwgw.png
image2_opcobu.png


I tried all the different kind of MPC constraint, but with BEAM there is radial displacement, even if I limit it with another boundary condition. Has anyone experienced something similar?
 
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Maybe you could use rigid body constraint or kinematic coupling constraint. They are usually utilized for torsion analyses.
 
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Thank you for your advice, I tried both but still I have the same result. BMC Beam should work because I have it on another file, but for some reason on my work fails
 
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