Bar end rotation

[nrdev]

Hi, I'm wondering how it is possible to know the rotation of one end of a bar in the model. I can see the rotation of one node, but if you have a beam supported on both ends and in the middle, I can't find how to see the rotation of the bar ends on the central support. Thanks. Regards.

[Rafal.Gaweda]

Either you are looking for this:

http://forums.autodesk.com/t5/Robot-Structural-Analysis/Nodes-Rotations-Local-Axes-API/m-p/3459442/h...

or just open Displacement table filtered to selection of these nodes.

[nrdev]

No, I don't want to know the node's rotations in the bar's coordinates system, I'm attaching a sample model so to explain my problem. My model contains bars supported on 3 nodes. One bar is pinned to the middle support. If I apply different loads on the 2 bars, their deflections will be different and thus, the rotation on their end at the middle support node will be different. If I open the nodes' displacement table, I can see a rotation value for the middle node but I have no way of knowing which bar the node rotates with, nor to know the rotation of the other bar's end. (Well in this easy sample case I could guess, but it would be a lot more difficult in real life !). Thanks. Regards.

[nrdev]

Sorry but the attachement system doesn't seem to work. I'm trying again from IE.

[Rafal.Gaweda]

Not possible to see bar ends rotations in easy way.

This way : add node near the end you want to check rotations:

[nrdev]

Ok, Thanks. I really thought it was a basic result one woudl want to see !

[Rafal.Gaweda]

or in case of having release on such end you can do it this way:

[Rafacascudo]

Rafal, Using compatible nodes wouldn´t solve this problem?

[Rafal.Gaweda]

It should in this case. I have not checked it but one node should belong to one bar, the second to the other bar
In general it depends on number of bars connected in one node because compatibility generates only one = second node .
Additionally: compatibility dofs are defined in Global CS