Wind and Structures

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Dynamic response of railway vehicles under unsteady aerodynamic forces caused by local landforms

  • Chen, Zhengwei (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University) ;
  • Liu, Tanghong (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University) ;
  • Li, Ming (P&T Research Center, CRRC Tangshan Co., Ltd.) ;
  • Yu, Miao (P&T Research Center, CRRC Tangshan Co., Ltd.) ;
  • Lu, Zhaijun (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University) ;
  • Liu, Dongrun (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University)
  • Received : 2018.07.06
  • Accepted : 2019.07.06
  • Published : 2019.09.25
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Abstract

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.

Keywords

Acknowledgement

Supported by : National Railway Administration, Central South University, China scholarship council (CSC)

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