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Recent content by JDSOMO

  1. JDSOMO

    How to PIN a 3D rigid body?

    I am using 6.14-1. FYI: I just tried that to be sure: deleted all BCs at the reference point & apply a BC in step-1 (not initial) - if I use displacement I cannot change from the global CSYS, but when I use velocity, I can change it.
  2. JDSOMO

    How to PIN a 3D rigid body?

    I tried all sorts of combinations with displacement/rotation but it didn't seem to work (also defining the BC in Step-1); however, what seems to work, i.e., allow me to select the local CSYS, is to use the "velocity/angular velocity" boundary condition. Not too sure why? But at least it's...
  3. JDSOMO

    How to PIN a 3D rigid body?

    Yes I know, but the selection is only possible if I use "Symmetry/Antisymmetry/Encastre", and here I can select 1 BC which is XSYMM (U1 = UR2 = UR3); so now I just need to fix U2 and U3, but this is not possible because if I create another BC with "pinned" for example (U1=U2=U3), then it...
  4. JDSOMO

    How to PIN a 3D rigid body?

    @Mustaine3 - I did try that, but the problem is that I cannot JUST have UR1 free AND have a local CS. For some reason, when I try setting a "Displacement/Rotation" BC in either the initial or subsequent steps, I cannot change from the global CS.
  5. JDSOMO

    How to PIN a 3D rigid body?

    Thanks for the quick reply - so do you mean (1) create a wire feature between the two points on my rigid body, i.e., connect two nodes that are part of my discrete rigid mesh, and (2) define a hinge connector on this wire? I will give it a go and report back.
  6. JDSOMO

    How to PIN a 3D rigid body?

    Hi all! Let's say I have some 3D rigid body that I want to "pin" through some arbitrary axis, such that the entire body rotates about this axis. Here is a sketch that may help: Any idea how I can do this? seems simple enough but playing around with MPC and rigid body constraints led me...
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