Multipoint Random Vibration Analysis of Train Converter Equipment

Based on the pseudo excitation method (PEM), this paper presents an efficient algorithm for the multi-point random vibration analysis of train converters. The constraint degrees of freedom and the unconstrained degrees of freedom of the finite element model of the converter are separated into two parts and the governing equations are rearranged. By using PEM, the power spectral density function of the load is decomposed, and then the random vibration analysis is transformed into a simple harmonic response problem. The results of the present method are compared with the commercial finite element software, and the accuracy and efficiency of the method are verified.