一种非线性隔振系统的分岔与混沌研究

Bifurcation and chaos in nonlinear vibration isolation system

分岔是通向混沌的主要道路.文章利用实验测量了非线性隔振系统中的力学参数,在实验基础上建立了非线性隔振系统的数值计算模型,通过对简谐激励下该非线性隔振系统的计算分析,并利用Poincare映射的方法得到了非线性隔振系统的全局分岔图,进而揭示了该非线性隔振系统的动力学特性.

Bifurcation is the major route to chaos .In this paper , the mechanical parameters of nonlinear vibra-tion isolation system are measured by tests , and the numerical model is established based on the tests .By analy-zing harmonic excitation , global bifurcation diagram is achieved by using Poincare mapping method , and then the dynamics of the nonlinear vibration isolation system is revealed .