bozosprzoj
Aerospace
- May 24, 2013
- 12
Good day!
I am trying to model a shaft with three rigid blades attaches in the middle of the shaft like so.
As you can see I was able to model the blades as beam elements (picture is rendered, that is why beam have cross-sections). To assemble the model using "Tie" constraint and it all behaved well.
My goal was to model blades as rigid and I did so. This is when I got a bit lost. I had to assign the reference point for each rigid body, and I did so. After that I tried to "Tie" all three blades to the node in the middle of the shaft (as i did for blades modeled as rigid) and i get this error: (Error in job rot: 2 nodes are used more than once as a slave node in *TIE keyword. These constraints are not removed either due to the presence of *CONSTRAINT CONTROLS,NO CHANGES keyword or because removing the constraints might affect the model. The nodes have been identified in node set ErrNodeOverconTieSlave.)
Thanks for your time and help.
Kev
I am trying to model a shaft with three rigid blades attaches in the middle of the shaft like so.
As you can see I was able to model the blades as beam elements (picture is rendered, that is why beam have cross-sections). To assemble the model using "Tie" constraint and it all behaved well.
My goal was to model blades as rigid and I did so. This is when I got a bit lost. I had to assign the reference point for each rigid body, and I did so. After that I tried to "Tie" all three blades to the node in the middle of the shaft (as i did for blades modeled as rigid) and i get this error: (Error in job rot: 2 nodes are used more than once as a slave node in *TIE keyword. These constraints are not removed either due to the presence of *CONSTRAINT CONTROLS,NO CHANGES keyword or because removing the constraints might affect the model. The nodes have been identified in node set ErrNodeOverconTieSlave.)
Thanks for your time and help.
Kev