摘要
应用车辆非匀速行驶时路面随机激励的时域模型,研究了非匀速车辆与弹性支承桥梁耦合系统并建立了其无量纲运动微分方程,获得桥梁跨中的无量纲最大挠度、车辆的舒适度随路面不平度系数、车辆的加速度及前后轮激励相关性的变化规律。数值结果表明,桥面的不平度系数、车辆的加速度及前后轮激励相关性均既对桥梁有不同程度的影响亦对车辆的舒适度产生影响。
The model in time domain of road random disturbance to a vehicle with uneven speed is used to study the coupled vibration of an elastically supported beam and a vehicle with uneven speed and to establish the dimensionless motion differential equations.The mid-span dimensionless maximum deflection values of the beam and the vehicle comfortable level during running are obtained with the varying of the uneven coefficient of rugged road surface,vehicle acceleration,the correlation between random disturbances of front and rear wheels.Numerical results show that the coefficient of rugged surface,acceleration,the correlation between random disturbances of front and rear wheels produce respective different effects not only on the girder bridge,but also on the vehicle comfortable level.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第1期30-36,共7页
Journal of Vibration and Shock
关键词
车辆
非匀速
随机激励
弹性支承桥梁
vehicle,uneven speed,random disturbance,elastically support bridge
