Random vibration analysis of vehicle-track coupling systems using symplectic method

doi:10.6052/0459-1879-2008-3-2007-428

Chinese Journal of Theoretical and Applied Mechani ›› 2008, Vol. 40 ›› Issue (3): 381-387.DOI: 10.6052/0459-1879-2008-3-2007-428

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Random vibration analysis of vehicle-track coupling systems using symplectic method

Feng Lv Jiahao Lin Yahui Zhang

State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China

Received:2007-09-12 Revised:2007-12-26 Online:2008-05-25 Published:1900-01-01

Abstract

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.

Key words: vehicle, track, random vibration, pseudo-excitation, symplectic

Feng Lv Jiahao Lin Yahui Zhang. Random vibration analysis of vehicle-track coupling systems using symplectic method[J]. Chinese Journal of Theoretical and Applied Mechani, 2008, 40(3): 381-387.

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Random vibration analysis of vehicle-track coupling systems using symplectic method

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