双线性双滞后环系统非线性振动  

Nonlinear vibration of double-loop bilinear hysteretic system

作　　者：吴志强[1] 郝颖[1] 郭凯[1] 

机构地区：[1]天津大学机械工程学院力学系,天津300072

出　　处：《振动与冲击》2011年第11期1-3,共3页Journal of Vibration and Shock

基　　金：国家自然科学基金(10872142);教育部博士点基金(2009003211005)

摘　　要：研究含双线性双环滞后单自由度系统非线性振动的响应特点。先用平均法得到主共振情况下系统的幅频响应方程。然后讨论了外激励振幅变化对幅频响应的影响。给出了模式变化的临界参数条件,找到了四种不同类型的幅频响应并分析了其特点。在四种响应中,只有一种能充分发挥滞后环的耗能作用,适于减振设计。Nonlinear vibrations of a single-degree-freedom system involving hysteresis with two loops were investigated.The frequency response equation was derived for system under primary resonance by applying the averaging method and the effects of excitation magnitude were studied.It is found that there will appear four types of frequency responses under different levels of excitation.It is also revealed and verified by numerical simulation that only one type among them is suitable for vibration reduction design.

关 键 词：双线性双环滞后 幅频响应 减振 

分 类 号：TB212[一般工业技术—工程设计测绘]