Hi Good Evening to all,

I am doing frequency analysis in Abaqus CAE, in the model i have a plate placed over 4 beam profiles, in interaction i done Beams as connection builder between plate and 4 beams, BCs are given as simply supported over 4 outer edges of the plate,  frequency reuested from 0 to 1000. when i run analysis m getting an error loke this "LANCZOS EIGENSOLVER ENCOUNTERED NUMERICAL SINGULARITY OR ZERO PIVOT. THIS MAY HAPPEN IF A BOUNDARY OF THE COMPUTATIONAL INTERVAL IS VERY CLOSE TO AN EIGENVALUE, THE PROBLEM HAS AN UNCONNECTED UNCONSTRAINED REGION WITH ZERO MASS MATRIX, OR A SYSTEM IS OVERCONSTRAINED."

Can any one please correct me what mistake i have done in modeling this problem..

Thanking you all in advance.............