摘要
为研究高速列车在脉动横风作用下的平稳运行问题,基于多刚体动力学及空气动力学理论,建立了高速列车八辆编组动力学模型及空间脉动横风载荷模型,并分别给予了模型验证。基于该模型,探究了脉动横风下的列车运行基本特性及该条件下的车速与风速安全限值。结果表明:多体动力学与随机风速模拟结合的分析方法是有效的;空间脉动横风载荷加剧了车辆3Hz内低频振动并激起了1Hz附近的峰值区;编组车辆中,列车气动三分力参数差异导致编组内响应呈现差异,多数情况下头车动力响应最明显;预设条件下,车速限值为355km/h,风速限值为33.5m/s。
In order to study the operation stability of high-speed train under fluctuating crosswind,the train model with eight vehicles is established based on the multi-rigid body dynamics theory.The spatial fluctuating crosswind loads model for high-speed train is built based on the aerodynamics theory,and the models are validated respectively.On this basis,the basic characteristics of train running under fluctuating crosswind and the safety limits of train speed and wind speed are investigated.The results show that the analysis method combining multi-body dynamics with stochastic wind speed simulation is effective.The fluctuating crosswind loads intensify the low-frequency vibration within 3 Hz of vehicle and excites the peak area near 1 Hz.Among marshalling vehicles,the difference of aerodynamic three-component force parameters of the train results in the difference of the response within the marshalling group,the dynamic response of head vehicle is the most obvious in most cases.Under the supposed conditions,the speed limit is 355 km/h and the wind speed limit is 33.5 m/s.
作者
杜家俊
吴一尘
关海宁
DU Jiajun;WU Yichen;GUAN Haining(School of Construction Machinery,Chang’an University,Xi’an 710064,China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2021年第5期100-107,共8页
Journal of Chongqing University of Technology：Natural Science
基金
国家自然科学基金项目(51208044,51508031)。
关键词
脉动横风
高速列车
空气动力学
多体动力学
运行平稳性
fluctuating crosswind
high-speed train
aerodynamics
multi-body dynamics
ride quality
