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master node in rigid bodies

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There are no visible rigid bodies- you should first make them visible in by right-click rigid bodies in browser>view options>show. It will only accept master/independent node of a rigid body.


To constrain in all dirctions except X translation choose appropriate DOF (se attached image). You can also define a skew frame, if you want to constrain in different coordinate system than global coordinate system which is default.





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The light green spider is a rigid body and the master node is at its center. Hide all components so only rigid bodies are displayed and then pick the node in the center. 


Or right-click the rigid body in the browser and select cross reference. /NODE ID is the master/independent node number of a rigid body. This ID can be entered as Add Node IDs in boundary condition Support parameter.


More on creating,modifying and checking  rigid bodies:



Please go through free Radioss ebook to get started in explicit simulation.

Also check following youtube channels:

Altair University. Altair India Student Contest. ELEATION By Apoorv Bapat

Hypercrash manuals:




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