摘要
通过对车辆后轴板簧系统的建模,选择一个碰撞界面作为Poincaré映射的截面,解析法和数值法相结合,证明该系统通向混沌的道路不仅有倍周期道路,而且还存在拟周期道路等复杂的混沌演化过程。对该系统分岔与混沌行为的深入研究,为车辆和冲击振动系统的优化设计提供了依据。
An important field in vibration engineering is the dynamics of mechanical systems with clearance and constraint.The model of one-degree-of-freedom system of rear-axle suspension of a vehicle is considered.Dynamic equation of the system with a non-linear elastic constraint is derived and Poincaré map is established numerically.Bifurcations and chaos of the system are investigated by numerical simulations and analytical method.The course from either quasi-periodic or period-doubling state to chaos are discussed.It is proved that some courses to chaos in the suspension system are non-typical.It is possible to optimize parameters of a practical system by investigation of bifurcation and chaos.
出处
《振动与冲击》
EI
CSCD
北大核心
2007年第2期18-20,28,共4页
Journal of Vibration and Shock
基金
甘肃省自然科学基金资助项目(编号:3ZS042-B25-043)
兰州交通大学"青蓝"人才工程基金资助计划资助项目(QL-06-05A)
