车下设备悬吊刚度对车体弹性振动的影响  

Effects of suspended stiffness of under-frame equipment on elastic vibrations of car-body

作　　者：罗光兵[1] 曾京[1] 吴会超[2] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031 [2]唐山轨道客车有限责任公司,河北唐山064000

出　　处：《机械设计》2015年第4期30-34,共5页Journal of Machine Design

基　　金：国家自然科学基金资助项目(U1334206);"十二五"国家科技支撑资助项目(2011BAG10B01)

摘　　要：采用ANSYS和SIMPACK多体动力学软件建立了高速车辆三维刚柔耦合动力学模型,研究了车下设备采用弹性悬吊方式时不同悬吊刚度对车体振动的影响。仿真结果表明,合理的悬吊刚度能够有效降低车体的弹性振动,尤其是对振动能量贡献最大的1阶弯曲振动减振效果明显。同时,结合滚动振动试验台试验数据,将多种刚度的试验结果与仿真结果进行了对比,二者能够有效地吻合,从而验证了理论模型的正确性,为仿真计算奠定了基础。文中的研究成果能为工程应用提供合理的参考。The 3D rigid-flexible-coupled dyn amic model of a vehicle with high speed was built by ANSYS and Simpack.The effects of different elastic-suspended stiffness of under-frame equipment on car-body vibration were studied. The simulation results show that the reasonable stiffness can decreases the elastic vibration of the car-body effectively, especially when the first bending vibration appears. The test results tally with the simulation results very well by comparing the data from the roller test table with that from simulation, proving that the theoretical model is correct and valid. The research can provide some reference for engineering application.

关 键 词：车下设备 悬吊刚度 弹性振动 车辆动力学 平稳性 

分 类 号：U270.11[机械工程—车辆工程]