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Date of Publication:2022-10-07

Journal:力学学报

Issue:3

Page Number:381-387

ISSN No.:0459-1879

Abstract:The vertical coupling model of vehicle-track systems is set up in the case of the track as an infinite periodic structure. The random irregularity excitation of the rail is transformed into a deterministic harmonic excitation with the pseudo excitation method, and the frequency response of the track and the power spectrum density (PSD) of the system response are analyzed using the symplectic algorithm. In addition, there are only 26 DOFs in the computational model to have an efficient and accurate solution. The model is verified with the conventional FEM, and the influence of the vehicle velocity on the system vibration is investigated.

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