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R-FBI基础隔震系统的混沌动力特性
Chaotic Kinetic Characteristics of the R-FBI Base Isolation
【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。
【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.
【Key words】 chaotic vibration; dynamic equation; R-FBI base isolation; simulation; chaotic kinetic characteristic;
- 【文献出处】 结构工程师 ,Structural Engineers , 编辑部邮箱 ,2013年02期
- 【分类号】TU352.12
- 【下载频次】32