I've just defined a CSYS type=Cylindrical, to apply a cylindrical spring properties to it.
I'm receiving the error message :"a material point in element xx lies on the polar axis. The orientation cannot be defined.Use the option orientation,System=rectangular or move the polar axis away from the material point".
The nodes of this spring point directly to the center of this cylindrical coord, and I don't seem to understand the problem with orientation definition. For other spring in different locations, there is no problem.
Also, it is assembly and it refers to elm in assembly - how to find this element then if nodes and element numbers in input file refer to parts...
Can someone help?