P-F基础隔震系统的混沌动力特性
首发时间:2013-03-27
摘要:本文在分析含P-F(Pure-Friction)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,得出系统的分岔图、相平面图、Poincare截面图和功率谱图,综合阐述了P-F基础隔震系统的混沌动力特性。
关键词: 混沌振动 动力方程 P-F基础隔震 模拟仿真 混沌动力特性
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Chaotic dynamic characteristic of the P-F base isolation system
Abstract:Based on the analysis of the shearing-type Multi-Degree-of-Freedom (MDOF) model including P-F isolation layer, the dynamic response equation of the entire isolation structure is presented. Based on the equation, the system is simulated by using Simulink. After calculating and analyzing the time series data of the isolation system, the bifurcation diagrams, phase diagrams, Poincare cross-section and power spectrum diagram can be obtained, which are described the chaotic dynamic characteristic of the P-F system comprehensively.
Keywords: kchaotic vibration dynamic equation P-F base isolation simulation chaotic dynamic characteristic
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