How can I change the referencing coordinate system of different cbeam pin degree of freedom?

Theo_22364
Theo_22364 Altair Community Member
edited February 2021 in Community Q&A

 

 

How can I change the referencing coordinate system of different cbeam pin degree of freedom?

For example if I match a rbe2 element and a beam element (pin with a = 4 at rbe2 and b = 0 to another beam element) the beam can rotate with 1 DoF referencing the global x-axis. But my beams are 3D oriented and thus don't align to a single global axis. If possible, where can I reference a local axis system? Or is there an easier solution?

My second main concern is the hinge orientation itself. I have pairs of beams that have different bending lines in 3D space. So the orientation of the 1 DoF hinge behavior is also important to me. Maybe if possible this can be solved by rotating the referencing coordinate system around the beam normal axis.

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Answers

  • Adriano Koga_20259
    Adriano Koga_20259 New Altair Community Member
    edited February 2021

    i'm pretty sure your pin flags are associated to your beam element orientation (local axis), being x-axis longitudinal, and y and z defined related to the orientation vector of your beam.

    image

    maybe i got your question wrong. Maybe some pictures would help.

     

  • Wiz211
    Wiz211 Altair Community Member
    edited February 2021
    Adriano Koga_20259 said:

    i'm pretty sure your pin flags are associated to your beam element orientation (local axis), being x-axis longitudinal, and y and z defined related to the orientation vector of your beam.

    image

    maybe i got your question wrong. Maybe some pictures would help.

     

    Thanks for the hint.

    I just took a closer look to the bar panel. The different orientation settings and the review button solved my problems.

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