摘要
将实际工程中车辆在桥面运动的隔振作用简化为单自由度车-桥系统隔振体系,建立了分数导数阶车-桥隔振模型的运动平衡方程.不考虑桥梁蠕变所产生激励响应,利用三角函数计算车-桥模型在分数导数下的运动平衡方程.在此基础上得到了车辆的运动放大系数和传导比,分析了各参数的影响.讨论了实际应用中无阻尼条件下、任意隔振效率下的隔振静位移.
The vibrate-isolation analysis in practical engineering was simplified with the single degree of freedom vehicle bridge system vibration isolation system.The dynamic equilibrium equation of the fractional derivative order carbridge model of vibration isolation was presented.Without considering the excitation response produced by micro-variation of bridge,trigonometric function was used to calculate the model.The vehicle motion amplification coefficient and transmission ratio were obtained and the effect of parameters were analyzed.And the vibration isolation static displacement was discussed under the condition of no damping and arbitrary isolation efficiency in practical engineering.
出处
《信阳师范学院学报(自然科学版)》
CAS
北大核心
2017年第1期146-149,共4页
Journal of Xinyang Normal University(Natural Science Edition)
基金
河南省科技计划项目(142300410200)
信阳师范学院研究生创新基金(2015KYJJ47)
关键词
分数导数
放大系数
传导比
隔振效率
fractional derivative
amplification constant
transmission ratio
isolation efficiency