高速列车车体与动力包设备耦合振动分析  

Coupling Vibration Analysis between the DMUs Carbody and Power Pack Structure

作　　者：王晨[1] 徐凤妹 许自强[3] 马卫华[1] 

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]中车南京浦镇车辆有限公司客车设计部,江苏南京210031 [3]中国铁道科学研究院机车车辆研究所,北京100081

出　　处：《机车电传动》2016年第5期12-16,共5页Electric Drive for Locomotives

基　　金：国家自然科学基金项目(51575458)

摘　　要：为研究车体与动力包结构耦合振动特性,计算车体固有模态以及低阶振型,建立了包含车下吊挂动力包的城轨车辆刚柔耦合振动模型,优化分析了动力包结构吊挂参数对车体振动特性的影响。计算结果表明:车体一阶弯曲频率对车辆垂向性能的影响要大于二阶弯曲频率。将动力包的振动以周期激励形式输入模型,当激振频率达到9.5 Hz和16.5 Hz时分别与车体的一阶和二阶弯曲频率相叠加,在此频率下车体的平稳性指标迅速恶化,因此在车辆设计过程中应尽量避免发生该频率下共振。In order to study the coupling vibration characteristics between the carbody and power package structure and calculate the carbody inherent ti-equency and low-order type, the urban rail vehicles coupling vibration model with power pack structure hanging under the carbody was derived, and the influence of hanging parameters on character of carbody vibration was analyzed. The results showed that： the influence of the first order vertical bending frequency of carbody on vertical stability was larger than the second order; when the vibration of the power package was input to model as periodically excited, and the excitation frequency reached 9.5 Hz or 16.5 Hz,which would superimpose with the first and second order benging frequency range, the ride index rapidly deteriorated. Therefore, vehicle design should try to avoid these resonance frequencies.

关 键 词：内燃动车组 动力包 车体 弹性吊挂 刚柔耦合 

分 类 号：U292.914[交通运输工程—交通运输规划与管理]