摘要
为了研究设备以单级、双层形式悬挂对高速列车垂向振动的影响,建立了车辆-设备刚柔耦合模型,获得了车体中部、构架上方以及设备的加速度频响函数。考虑几何滤波效应,设备的连接方式(刚性、弹性)、连接刚度、连接位置等因素下车体与设备的耦合振动特性以及其相互影响关系。结果表明:速度作为几何滤波效应的影响因素,在研究车辆-设备耦合振动时必须考虑速度的影响;车辆在6~12 Hz内的振动响应受设备连接参数影响明显;在双层隔振系统中,框架更容易与车体产生耦合振动;当设备连接刚度为原始值时,车体中部响应较小,但双层隔振系统中设备会与框架产生耦合振动导致二者振动急剧增大;设备连接位置越靠近车体中部,车体的低阶垂向弯曲模态更易解耦,可以显著降低车体中部振动,同时使得车体的高阶垂弯频率最大提高0.4 Hz。
In this article,a rigid-elastic coupling vehicle-equipment system has been established taking the high speed train with multistage and suspension multi-equipment as a research object. The acceleration frequency response characteristics above the car body center and bogie were obtained. Also,the vehicle-equipment coupling vibration characteristic and interactional relationship has been investigated with considering geometry filtering effect,the equipment connecting method（ rigid,elastic）,the connecting stiffness and the connecting position. The result shows that： the speed has an important influence on the vehicle vertical response; the connecting parameters mainly affect the vehicle 6-12 Hz;the frame and the car body more easily generate coupling vibration compared to the equipment 1 and 2; the middle car body vibration becomes quite tiny while the equipment and frame have the converse result when connecting stuffiness is1 Kei（ i = 1,2,3）. The connecting position closer to the middle vehicle,the smaller the middle vehicle vibratio. The higher vertical bending frequency can reach 0. 4 Hz.
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第22期245-251,共7页
Journal of Vibration and Shock
基金
国家自然科学基金(51675443)
关键词
多级多设备
加速度频响函数
几何滤波效应
弹性连接参数
安装位置
multistage and multi-equipment
acceleration frequency response function
geometric filtering effect
elastic connecting parameter
mount position
