摘要
建立路面随机激励作用下的单自由度汽车悬架模型,通过数值仿真,给出悬架振动的时间历程曲线、自功率谱密度图形和Poincare截面,从理论上说明悬架振动能够进入混沌状态。采用按压车体法,对越野车B J212、B J2020和轿车MAZ-DA、FORD、TOYOYA、HYUNDAI等进行了振动实验,获取实验汽车悬架的振动曲线,对其计算系统参数如一阶固有频率和阻尼比、混沌参数如关联维、Kolmogorov熵和最大李指数,从而验证了汽车悬架振动的混沌特性。为悬架系统的设计和建立汽车悬架隔振性能混沌评价新方法提供了依据。
The chaos characteristics of automobile suspension vibration are researched by numerical simulation and experiment.The model of one DOF automobile suspension,which is subjected to the road random excitation,is built up.The time history curve,PSD figure and Poincare map are given by numerical simulation.It is confirmed that the vibration of automobile suspension can come into chaotic motion.The vibration experiment of off-road jeeps BJ212,BJ2020 and passenger cars MAZDA,FORD,TOYOYA and HYUNDAI are carried out by using press body method.The vibration curves of the automobile suspension are obtained.The system parameters such as first order nature frequency and damp rate,the chaos characteristics parameters such as correlation dimension,Kolmogorov entropy and maximum Lyapunov exponent are calculated.The chaos characteristics of automobile suspension vibration are verified.The basis for the design of suspension system and the establishment of a new automobile suspension vibration isolation performance chaotic evaluation method is provided.
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2010年第2期198-201,共4页
Journal of University of Jinan(Science and Technology)
基金
江苏省"六大人才高峰"项目(07-D-014)
江苏省高校自然科学计划项目(07KJD580084)
南京工程学院重大科研项目(KXJ07066)
关键词
悬架
混沌
振动
仿真实验
suspension
chaos
vibration
simulation experiment
