Title: Transfer path analysis of a railway vehicle based on global transfer direct transfer

Authors: Yingli Li; Yong Wang; Juliana Wada

Addresses: Key Laboratory of Traffic Safety on Track (Central South University), Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha, 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha, China ' Key Laboratory of Traffic Safety on Track (Central South University), Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha, 410075, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha, 410075, China ' Key Laboratory of Traffic Safety on Track (Central South University), Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha, 410075, China

Abstract: To overcome the shortcomings of the classical transfer path analysis (TPA) and operation transfer path analysis (OTPA), the global transfer direct transfer (GTDT) method is adopted. This method does not require force determination, and direct transfer functions (DTFs) can be used to identify problematic subsystems, which are calculated and used to determine the cause of the total displacements on the railway vehicle body. When studying the contribution of each component of the bogie to the vehicle body displacements, the effect of different mechanical property parameters is analysed to find the problematic subsystem that causes the highest displacement for improvement. It is creative that mathematical mechanical modelling of a railway vehicle with 6 and 11 degrees of freedom (DOF) is developed for GTDT analysis. Results show that the GTDT method is a promising method for studying the vibration transmission path of complex practical rail vehicle systems. It can diminish the vibration efficiently.

Keywords: transmission path analysis; global transfer matrix; direct transfer matrix; vibration characteristics; analytic model; railway vehicle body.

DOI: 10.1504/IJHVS.2024.136240

International Journal of Heavy Vehicle Systems, 2024 Vol.31 No.1, pp.1 - 31

Received: 05 Oct 2021
Accepted: 16 Dec 2021
Published online: 24 Jan 2024 *