A precise integration scheme for the non-uniform and completely non-stationary responses of viscoelastic energy dissipation structures

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (16) : 100-110.

LI Chuangdi，WANG Bowen，CHANG Mingjing

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Abstract

In order to establish a seismic analysis and design method of a viscoelastic energy dissipation structure and its protection system, a numerical analysis method of uniform and non-uniform, non-stationary and completely non-stationary random seismic response of a Maxwell damping energy dissipation system with braces was systematically studied in this paper.Firstly, the Maxwell damping energy dissipation system with braces was constructed, and the dynamic equation of the structure was established by the method of order expansion.Then, based on the efficient virtual excitation method, a general precise harmonic exponential polynomial precise integration scheme for uniform and non-uniform non-stationary and completely non-stationary responses was proposed, and eight classical uniform and non-uniform modulated non-stationary and completely non-stationary seismic responses were obtained.Finally, the variance of the uniform and non-uniform non-stationary, fully non-stationary seismic response of the energy dissipation structure system can be obtained.The results show that the method has the characteristics of wide application, high efficiency and strong engineering application.It provides a method for the analysis of seismic response of viscoelastic energy dissipation system.

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viscoelastic damper / non-uniform and non-stationary / completely non-stationary / pseudo excitation method / precise integration scheme

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LI Chuangdi，WANG Bowen，CHANG Mingjing. A precise integration scheme for the non-uniform and completely non-stationary responses of viscoelastic energy dissipation structures[J]. Journal of Vibration and Shock, 2021, 40(16): 100-110

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