Hello,
I am having issues running an Eigen value simulation on a bridge model that I have developed. The model consists of a bridge super-structure supported by pinned connections on the ends of the bridge length and a roller support in the middle.
The model runs without errors when I do not request an Eigen value analysis, but aborts when I request an Eigen analysis. The message file sites the cause as a factorization error. Warnings also appear stating a zero pivot when releasing the 1st dof of the nodes associated with the roller connection.
I have attache the .inp file of my model. Do you know what may be causing this error?
Thanks,
Paula
For anyone that may need
For anyone that may need assistance with a similar problem:
Through scanning the documentation I found that you cannot apply a kinematic constraint to a node/node set that already is linked to an MCP constraint. If you must have the MPC constraint one possibility is to assign a constraint mimics a kinematic constraint aka. a join or slot constraint.
I hope that helps someone.
Paula