【作者】 朱石坚； 楼京俊； 张星； 张振海；

【Author】 Zhu Shijian;Lou Jingjun;Zhang Xing;Zhang Zhenhai;

【机构】 海军工程大学；

【摘要】 利用数值分析方法对两自由度非线性隔振系统的动力学特性和功率流传递特性进行了分析。根据激励力和激励频率双参数动力学行为分布图,验证了两自由度非线性隔振系统中存在复杂的非线性动力学行为。在此基础上,分析了两自由度非线性隔振系统在不同激励幅值时的分岔规律,并从能量的角度分析了系统的隔振效果。研究结果表明,在一定的参数范围内,混沌运动比单周期运动具有较好的线谱衰减能力和隔振性能。更多还原

【Abstract】 The nonlinear dynamics and the power flow transmissibility of a two-degree-of-freedom vibration isolation system with nonlinear spring are numerically studied.The dynamic behavior distribution chart of the system is obtained.Cascades of bifurcation of the system with different excitation amplitude are also gained.The isolation effectiveness is analyzed from the point of view of energy.The numerical results show that the reduction of the line spectra in chaotic state is much greater than that in non-chaotic state.更多还原