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This error occurs when you use FDR (InterpE) and its slave nodes are on the same line (collinear)
"The master nodes of an RBE3 element must be collinear."
Before telling you the workaround, let me correct the terminologies
1. In RecurDyn, FDR (InterpE) corresponds to RBE3 and FDR (RigidE) corresponds to RBE2
Please refer to https://functionbay.com/J0aeUf
2. 'Master nodes' in the error message corresponds to 'Slave nodes' of FDR diaog.
So, the error message can be corrected as 'The slave nodes of FDR (InterpE) must not be collinear.
When you use FDR (InterE), if the slave nodes are on the same line, simulation fails
If the slave nodes are circularly arranged, there is no problem.
But if the slave nodes are on the same line (Collinear) as below image, it cannot be simulated.
To avoid this error, there are 2 workarounds.
(These workarounds can generate little errors but usually no problem.)
1. Add nodes out of the line to Node Set션
- Add 1 or 2 nodes as below.(if symmetry needs to be considered, 2 nodes at the ends)
2. Change the position of 1 node a little
- for example, change the position of one node from (100, 0, 0) to (100.01, 0, 0)
- But if the flexible body is deformed during simulation and the nodes becomes collinear, simulation can stop
- To change the node position, you need to select the node and change the position from property dialog.
Please refer to https://functionbay.com/ktj0zn to know about 'how to select nodes'
