How to get local rotation and deformation of beam elements?

Hello,

I have two tubes in zero gravity that are radially connected via several dipods (around 20 pairs of two beams or bars).
The assembly gets cooled down and the beams will bend and high stresses occur. So the idea is tracking local rotation and deformation of the clamped beams to test new constraints (hinge orientations) to reevaluate the stresses.

So my question is how to get the local deformation and rotation of the beam that is already translating/rotating with the whole system due to the thermal shrinking?

My first thought was creating a local coordinate System with origin at the first node of the beam. But I don't find a way to connect the results (by optistruct) with the local coordinate System.

Kind regards

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Accepted answers

Viraj_Kulkarni

If you create local coordinate systems at each of those points. You can assign the coordinate systems to those nodes by (Analysis) systems-->assign-->set disp.

You can view the results in Hyperview, by default it contours in analysis system. You can see the change if you switch that to global system.

You can also obtain rotation by using ROTA in output request under displacement-->rotations if you want.

All comments

Viraj_Kulkarni

If you create local coordinate systems at each of those points. You can assign the coordinate systems to those nodes by (Analysis) systems-->assign-->set disp.

You can view the results in Hyperview, by default it contours in analysis system. You can see the change if you switch that to global system.

You can also obtain rotation by using ROTA in output request under displacement-->rotations if you want.

Theo_22364

If you create local coordinate systems at each of those points. You can assign the coordinate systems to those nodes by (Analysis) systems-->assign-->set disp.

You can view the results in Hyperview, by default it contours in analysis system. You can see the change if you switch that to global system.

You can also obtain rotation by using ROTA in output request under displacement-->rotations if you want.

Thanks for the help. It works.

I also found out that you can create the local coordinate system in hyperview right after the analysis: model -- create -- systems and then following your last step: contour -- resolved in