侧风环境下列车高速交会流固耦合振动安全性分析  

Fluid-solid coupled vibration safety analysis for two trains passing by each other at high-speed in side wind

作　　者：崔涛[1,2] 张卫华[1] 王琰[3] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031 [2]中国北车集团唐山轨道客车有限责任公司产品研发中心,河北唐山063035 [3]中国北车集团唐山轨道客车有限责任公司产品技术研究中心,河北唐山063035

出　　处：《振动与冲击》2013年第11期75-79,共5页Journal of Vibration and Shock

基　　金：国家科技支撑计划项目(2009BAG12A01);国家973计划项目(2011CB711100);国家自然科学基金(50823004)

摘　　要：为防止侧风环境下列车高速交会压力波对车体结构造成破坏及气动载荷冲击对运行安全性影响,综合计算流体动力学有限体积法与列车多体系统动力学仿真方法,由流固耦合出发,同时对侧风环境下列车高速交会的外流场及列车系统动力响应进行分析,考察会车压力波、气动冲击、车体响应及列车运行的安全性。结果表明,背风侧列车会车压力波头波大于迎风侧列车,而尾波则小于迎风侧列车,最大压力波动出现在背风侧列车。侧风环境下列车高速交会时,彼此具有挡风作用,安全性指标出现波动,列车运行安全性短时间内有所改善。In order to avoid the structural deterioration caused by pressure wave and the effect of aerodynamic force impulse on running safety when two trains passing by each other at high-speed in side wind, considering fluid-solid coupled vibration, the flow field equations and dynamic equations of a multi-body system were solved at the same time with the finite volume method of computational fluid dynamics and the numerical simulation method of multi-body systems dynamics. And the pressure wave, aerodynamic impulse, carbody response and running safety were studied. The results showed that the bow wave of pressure wave on the upwind train is bigger than that on the leeward train; and the tail wave on the upwind train is smaller than that on the leeward train, the maximum pressure wave appears on the upwind train; a train screens the other against the wind and the safety indices fluctuate, the running safety gets better in a short time when the two trains passing by each other at high-speed in side wind.

关 键 词：流固耦合 列车交会 侧风 压力波 运行安全性 列车系统动力学 列车空气动力学 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程] U270.11[机械工程—车辆工程]