混合动力动车组动力包隔振设计及试验研究  

Vibration Isolation Design and Test Research of Powerpack for Hybrid Electric Multiple Units

作　　者：张艳斌 张世雄 孙维光 张继旺[3] 张立民[3] ZHANG Yanbin;ZHANG Shixiong;SUN Weiguang;ZHANG Jiwang;ZHANG Limin(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031;CRCC Qingdao Sifang Locomotive&Rolling Stock Co.,Ltd.,Qingdao 266111;State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031)

机构地区：[1]西南交通大学机械工程学院,成都610031 [2]中车青岛四方机车车辆股份有限公司,青岛266111 [3]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《机械工程学报》2024年第16期314-323,共10页Journal of Mechanical Engineering

基　　金：国家自然科学基金面上资助项目(52075457)。

摘　　要：动力包悬挂于动车组车体下方,在工作时产生幅值大且频率复杂的激扰力,这不仅影响其自身的运行,还会引起车体的运行舒适性和安全性问题,因此需要对其进行振动隔离。建立具有多子结构动力包双层隔振系统的刚体动力学模型,根据蒙特卡洛灵敏度方法筛选出设计变量,以系统隔振效率作为约束条件,柴油发电机组振动烈度和传递到车体的动反力作为优化目标,采用枚举法编程对隔振系统的动刚度进行优化设计。建立动力包ADAMS刚柔耦合模型验证设计动刚度的合理性。最后,将动力包悬挂于台架下进行机组振动烈度和系统振动传递率试验。试验结果表明:在各转速工况下,机组的振动烈度均小于18 mm/s,隔振系统的隔振效率均大于85%。这说明该隔振设计方法能够有效地应用于具有多子结构双层隔振系统的隔振设计中。The powerpack which is suspended under the car body of the EMU generates an exciting force with large amplitude and complex frequency during operation.It will affect its own operation and cause the running comfort and safety problems of the car body.Therefore,the Powerpack needs to be vibration-isolated.A dynamic model of double-layer vibration isolation system with multi substructure is established.According to the Monte Carlo sensitivity method,the design variables are selected.The vibration isolation efficiency of the system is used as a constraint condition.The vibration intensity of the diesel generator set and the dynamic reaction force transmitted to the car body are taken as the optimization objectives.Then,the enumeration method is used to optimize the dynamic stiffness of the vibration isolation system.In order to verify the rationality of design dynamic stiffness,the ADAMS rigid-flexible coupling model of the package is established.Finally,the vibration intensity and vibration isolation efficiency tests are carried out.The test results show that the vibration intensity of the diesel generator set is less than 18mm/s,and the vibration isolation efficiency of the vibration isolation system is more than 85%at different rotary speed.It means that the vibration isolation design method can be effectively applied to the vibration isolation design of a double-layer vibration isolation system with multiple substructures.

关 键 词：动力包 双层隔振 隔振效率 振动烈度 优化设计 

分 类 号：U270[机械工程—车辆工程]