硬特性非线性隔振装置混沌动力学特性研究

摘要

针对非线性隔振原理设计出硬特性非线性混沌隔振实验装置,对以钢板、橡胶材料为隔振元件的非线性隔振系统进行了实验研究,实验得到了该装置的力学性能参数.通过数值计算得到了该装置的动力学行为.计算结果表明该装置从周期分岔逐渐进入混沌状态,线谱也从单一频谱结构变为宽频谱结构,且在混沌区域内对线谱有明显的隔离效果.%Based on the principles of nonlinear vibration isolation, the hardening nolinear vibration isolation device was designed. Experimental studies on the nonlinear vibration isolation system with a kind of steel plate and rubber as isolating elements were carried out to obtain the system's chaotic characteristic parameter range. The mechanical properties of the device were studied experimentally and the dynamic behavior of the device model was investigated numerically. The results show that the bechvior of the device gradually varies from period bifurcation into chaotic state and the line spectrum is changed from single spectral structure into broadband spectral structure. It is concluded that chaotic vibration isolation is preferable for line spectra isolation.