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二自由度汽车悬架的动态特性分析

Xifeng Tan,Yahui Cui, Mengru Wang

Agricultural Equipment & Vehicle Engineering（2017）

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Abstract
基于MATLAB建立了前悬架系统的二自由度振动模型,推导出主频率与主振型,选取余弦函数作为路面激励,根据Newmark-β法解得在路面不平度作用下不同车速行驶车辆的振动规律.结果表明,高速通过该路面容易引起车辆的高频振动,振幅较大,行驶速度过高加大车辆的翻车危险,严重影响车辆的操纵稳定性与乘车舒适性.
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