连续减速带参数对非线性车辆混沌振动特性影响研究
首发时间:2010-06-09
摘要:针对车辆通过高速公路上铺设的连续减速带可能引起的混沌振动现象,构建呈周期变化的减速带-车速耦合路面动态激励模型,以数值仿真的方法研究非线性2自由度1/4车辆悬架模型的混沌振动特性,分析了减速带参数对车辆发生混沌振动的速度范围的影响,得到了车辆在不同的限速段内避免混沌振动的参数要求。结果表明:在连续减速带路面的激励下,车辆在限速段内有发生混沌振动的可能性,可通过在一定的范围内改变连续减速带参数予以抑制。
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THE INFLUENCE OF PARAMETERS OF CONSECUTIVE SPEEDS HUMPS ON CHAOTIC VIBRATION PERFORMANCE OF NONLINEAR VEHICLE
Abstract:IThis paper is aimed at analyzing the chaotic vibration of a vehicle passing the consecutive speed control humps(SCHs) on the highway. A consecutive SCHs-speed coupling excitation function is presented. The chaotic vibration of nonlinear vehicle is studied by numerical simulation under a 2 DOF nonlinear vehicle suspension model. The influence of the chaotic vibrations with different parameters of the consecutive SCHs is analyzed.Researches show that the chaotic motion may occur as the vehicle moves over a series of the consecutive SCHs. Furthermore, chaotic motion can be inhibited reasonably and effectively by adjusting the parameters of the consecutive SCHs properly.
Keywords: vehicle suspension speed control hump parameters chaotic vibrations bifurcation
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No.4375228535630127****
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