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Wind and Structures
  Volume 29, Number 3, September 2019 , pages 149-161

Dynamic response of railway vehicles under unsteady aerodynamic forces caused by local landforms
Zhengwei Chen, Tanghong Liu , Ming Li, Miao Yu, Zhaijun Lu and Dongrun Liu

    When a railway vehicle runs in crosswinds, the unsteady aerodynamic forces acting on the train induced by the vehicle speed, crosswind velocity and local landforms are a common problem. To investigate the dynamic performance of a railway vehicle due to the influence of unsteady aerodynamic forces caused by local landforms, a vehicle aerodynamic model and vehicle dynamic model were established. Then, a wind-loaded vehicle system model was presented and validated. Based on the wind-loaded vehicle system model, the dynamic response performance of the vehicle, including safety indexes and vibration characteristics, was examined in detail. Finally, the effects of the crosswind velocity and vehicle speed on the dynamic response performance of the vehicle system were analyzed and compared.
Key Words
     railway vehicle; unsteady aerodynamic forces; dynamic performance; landforms
Zhengwei Chen, Tanghong Liu , Zhaijun Lu and Dongrun Liu: Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering,
Central South University, Changsha 410075, P.R. China
Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Changsha 410075, P.R. China
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Changsha 410075, P.R. China
Ming Li and Miao Yu: P&T Research Center, CRRC Tangshan Co., Ltd., Tangshan 063035, P.R. China

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