Integration of bio-inspired limb-like structure damping into motor suspension of high-speed trains to enhance bogie hunting stability
作者机构：State Key Laboratory of Rail Transit Vehicle SystemSouthwest Jiaotong UniversityChengdu 610031China Department of Engineering MechanicsKTH Royal Institute of TechnologyStockholmSweden
出 版 物：《Railway Engineering Science》 (铁道工程科学（英文版）)
年 卷 期：2024年第32卷第3期
页 面：324-343页
核心收录：
学科分类：07[理学] 0701[理学-数学] 0823[工学-交通运输工程] 070101[理学-基础数学]
基 金：financial support for the research,authorship and/or publication of this article:the National Natural Science Foundation of China(Nos.52388102,52072317 and U2268210) the State Key Laboratory of Rail Transit Vehicle System(No.2024RVL-T12)
主 题：High-speed train Hunting stability Bio-inspired limb-like structure Motor suspension Nonlinear damping
摘 要：Hunting stability is an important performance criterion in railway *** study proposes an incorporation of a bio-inspired limb-like structure(LLS)-based nonlinear damping into the motor suspension system for traction units to improve the nonlinear critical speed and hunting stability of high-speed trains(HSTs).Initially,a vibration transmission analysis is conducted on a HST vehicle and a metro vehicle that suffered from hunting motion to explore the effect of different motor suspension systems from on-track ***,a simplified lateral dynamics model of an HST bogie is established to investigate the influence of the motor suspension on the bogie hunting *** bifurcation analysis is applied to optimize the motor suspension parameters for high critical ***,the nonlinear damping of the bio-inspired LLS,which has a positive correlation with the relative displacement,can further improve the modal damping of hunting motion and nonlinear critical speed compared with the linear motor suspension ***,a comprehensive numerical model of a high-speed train,considering all nonlinearities,is established to investigate the influence of different types of motor *** simulation results are well consistent with the theoretical *** benefits of employing nonlinear damping of the bio-inspired LLS into the motor suspension of HSTs to enhance bogie hunting stability are thoroughly validated.
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