【摘要】 介绍了混沌振动,在分析含R-FBI隔震层的剪切型多自由度体系模型后,给出了整个隔震结构的动力反应方程。在动力反应方程基础之上,借助于Simulink软件对系统进行动态模拟仿真。计算和分析隔震系统的时间序列数据,得出系统的时程曲线图、相平面图、Poincare截面图和功率谱图,综合阐述了R-FBI基础隔震系统的混沌动力特性。更多还原

【Abstract】 This paper first introduces the theory of chaotic vibration.After the analysis of the shearing-type Multi-Degree-of-Freedom(MDOF) model including the R-FBI isolation layer,the dynamic response equation of the entire isolation structure was established.Based on the equation,the system was simulated by using Simulink.Through calculating and analyzing the time-history data of the isolation system,time response curves,phase maps,poincare cross-section and power spectrum diagrams were obtained,which were used to describe the chaotic dynamic characteristics of the R-BFI system comprehensively.更多还原