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。
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.
出处
《结构工程师》
北大核心
2013年第2期101-107,共7页
Structural Engineers
关键词
混沌振动
动力方程
R-FBI基础隔震
模拟仿真
混沌动力特性
chaotic vibration, dynamic equation, R-FBI base isolation, simulation, chaotic kinetic characteristic
