Investigation of aerodynamic effects on the high-speed train exposed to longitudinal and lateral wind velocities |
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| Affiliation: | 1. College of Mechanical and Electronic Engineering, Qingdao University, Qingdao 266071, China;2. National R & T Center, CSR Qingdao Sifang Co. Ltd., Qingdao 266111, China;3. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China;1. FEUP, Faculty of Engineering of the University of Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal;2. KAIT, Kanagawa Institute of Technology, 1030 Shimo-ogino, Atsugi-shi 243-0292, Kanagawa, Japan;3. RTRI, Railway Technical Research Institute, 2-8-38 Hikari-cho, Kokubunji-shi 185-8540, Tokyo, Japan;1. Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha, 410075, China;2. Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha, 410075, China;3. National & Local Joint Engineering Research Centre of Safety Technology for Rail Vehicle, Central South University, Changsha, 410075, China;4. P&T Research Center, CRRC Tangshan Co., Ltd, Tangshan, 063035, China;1. Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha, 410075, PR China;2. Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Changsha, 410075, PR China;3. National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Changsha, 410075, PR China;4. Birmingham Centre for Railway Research and Education, School of Civil Engineering, University of Birmingham, B15 2TT, UK |
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| Abstract: | The wind stability of the high-speed train has gained an increasing interest in the last few years. In this paper, an investigation of the effects of stochastic winds with longitudinal and lateral components on the high-speed train is described. The longitudinal and lateral wind time histories at the position of a moving vehicle, for a variety of wind directions, are first simulated. An algorithm for computing the unsteady aerodynamic load time histories is then derived for a moving vehicle. A typical railway vehicle has been modeled using the vehicle dynamic simulation package ‘Simpack’, and the unsteady wind loads of the same vehicle are applied to the vehicle model to investigate the dynamic response behavior. The simulated vehicle behavior is assessed against the indicator of load reduction factor, which indicates wheel unloading and therefore potential roll over. The characteristic wind curves (CWC) and its spread range are then obtained to evaluate the operational safety of the high-speed train. The results demonstrate that the operational safety of the high-speed train will be overestimated if the lateral wind velocity is not considered, especially for the small angles between vehicle and wind. |
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| Keywords: | Stochastic winds High-speed train Wind direction Lateral wind velocity Characteristic wind curves |
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