Definition of prescribe displacement and rotation

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  • NataCalc
    Member
    • Jan 2019
    • 87

    Definition of prescribe displacement and rotation

    Hi,


    I do have the trivial question. The prescribed displacements in x y z of rigid body is defined by displacement vector (r=r1-r2) or magnitude of displacement (sqrt(rx^2+ry^2+rz^2) in FEBio? Same question for rotation.

    I have already posted that I do have problem (Negative Jacobian) while applying BC to rigid bodies. In this case you suggested to improve the quality of mesh. Beside this, can this situation be solved via improvement of BC? Does FEBio support high order of mesh?

    Why in the enclosed .feb file (which I cannot unclosed because of the size) at step2 I receive * No force acting on the system? In this .feb file I interpolated my BC.

    Thanks for any advice.
    Regards,
    Nataliya
  • maas
    Lead Code Developer
    • Nov 2007
    • 3400

    #2
    Looks like this is a repost of https://forums.febio.org/showthread....s-and-rotation.
    I moved my response there since the FEBio user's forum is a better place to discuss this.

    Steve
    Last edited by maas; 06-25-2019, 07:06 AM. Reason: duplicate post
    Department of Bioengineering, University of Utah
    Scientific Computing and Imaging institute, University of Utah

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