THEORETICAL AND NUMERICAL RESEARCH ON FORCED UNCOUPLING METHOD FOR SEISMIC RESPONSE OF NON-CLASSICALLY DAMPED LINEAR SYSTEM

Yu Ruifang; Zhou Xiyuan

doi:10.13204/j.gyjz200502015

Volume 35 Issue 2

Dec. 2014

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Abstract

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Yu Ruifang, Zhou Xiyuan. THEORETICAL AND NUMERICAL RESEARCH ON FORCED UNCOUPLING METHOD FOR SEISMIC RESPONSE OF NON-CLASSICALLY DAMPED LINEAR SYSTEM[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(2): 52-56,26. doi: 10.13204/j.gyjz200502015

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THEORETICAL AND NUMERICAL RESEARCH ON FORCED UNCOUPLING METHOD FOR SEISMIC RESPONSE OF NON-CLASSICALLY DAMPED LINEAR SYSTEM

doi: 10.13204/j.gyjz200502015

Yu Ruifang¹,
Zhou Xiyuan²

1.
1. Beijing Laboratory of Earthquake Engineering and Structural Retrofit,Beijing University of Technology Beijing 100022;
2.
2. Institute of Earthquake Engineering,China Academy of Building Research Beijing 100013

Received Date: 2004-09-28
Publish Date: 2005-02-20

Abstract

Abstract

The enforcement process and theoretical background of the forced uncoupling method, together with its meanings of mathematics and physics, are analyzed by introducing complex mode superposition formula for calculating seismic responses of non-classically damped linear system. Furthermore, the errors of the forced uncoupling method and the measures of improving its precision by using pseudo-force iteration method based on real modes are discussed. The researchful results not only contribute to comprehend deeply essential of this method, but also make for discussing its scope of application and methodology of error control.
- non-classical damping,
- the forced uncoupling method,
- real mode

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References(8)

References

Elishakaff I, Lyon R H Random Vibration Status Recent DevelopmentsElsvier, 1986

[2] 欧进萍,吴斌,龙旭耗能减震结构的抗震设计方珐. 地震工程与工程振动, 1998, 18(2):98～107

[3] Caughey A K. Classical Normal Modes in Damped Linear Dynamic Systems. Journal of Applied Mechanics, ASME, 1960, 27(6): 269～271

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[5] 周锡元. 一般有阻尼线性体系地震反应的振型分解方法. 北京: 地震出版社, 1992

[6] 周锡元, 董娣,等. 非正交阻尼线性振动系统的复振型地震响应叠加分析方法. 土木工程学报,2003,36(5):30～36

[7] 桂国庆. 非比例阻尼结构体系近似解耦分析中的误差研究. 工程力学,1994,11(4):40～45

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