MASS MATRIX ESTIMATION FOR THE DISCRETIZED DYNAMIC MODEL OF RAILWAY CAR BODIES

Abstract

A method has been developed for estimating the mass matrix for the dynamical model with discretized masses of railway car bodies. This method relies on the comparison between vibrations of real beams and of those with discretized, section-wise uniform mass distribution. The objective function relying on the least squares method has been minimized by the SUMT method. Implementation of the computation method is illustrated on hand of analyzing a railway luggage truck body.