Method of Modeling the Excitation Spectrum of Train Based on Track Irregularity
A new technique is present in this paper that transforms the railway track irregularity power spectral density of left and right rails into the excitation power spectral density of wheelset of train, compared with the railway track irregularity spectrums of left and right rails which are not the direct inputs of simulation dynamic model of trail. A parameter model is chosen as the model of excitation spectrum and parameters fitting result shows that this model is suitable for the excitation spectrums of traversing, floating and head shaking, and the method present in this paper is effective.
E. W. Chen et al., "Method of Modeling the Excitation Spectrum of Train Based on Track Irregularity", Applied Mechanics and Materials, Vols. 97-98, pp. 931-934, 2011