I am doing frequency analysis of an orthotropic bridge. To connect the girder with girder, floor beams and edge beams, I assigned MPC constraints to the respective nodes. But after running the analysis, I am getting the following error:
"22 nodes are missing degree of freedoms. The MPC/Equation/kinematic coupling constraints can not be formed. The nodes have been identified in node set ErrNodeMissingDofConstrDef."
I checked again the constraints, but there was not any node with missing dof.
Anyone can suggest me solution? It will be appreciated.