非线性-线性联合结构控制方法减震性能研究

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摘要调谐质量阻尼器(TMD)是一种有效的结构控制方法，但其频率鲁棒性较差；非线性能量阱(NES)减振性能受频率变化的影响较小，但对输入能量大小较敏感。本文提出了单质量联合阻尼器和双质量联合阻尼器——集NES的频率鲁棒性和TMD的能量鲁棒性优势于一体的两类结构控制方法。以两类非线性-线性联合控制装置的运动方程为基础，本文建立了两自由度主体结构使用不同控制方法的数值模型，并在脉冲型荷载作用下对单质量和双质量联合阻尼器的控制参数进行了优化。结果表明，非线性-线性联合控制方法具有与NES和TMD相近的减振性能和较高的频率鲁棒性和能量鲁棒性，且通过脉冲荷载优化得到的控制装置能够有效减小结构地震响应，相较完全非线性和完全线性的方法，非线性-线性联合控制方法具有更强的减震鲁棒性。

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	王菁菁
	刘志彬
	浩文明

关键词 ：结构控制, 联合控制, 非线性能量阱, 地震作用, 数值模拟

Abstract：Tuned mass dampers (TMDs) are an effective structural control method with weak robustness against frequency changes.Nonlinear energy sinks (NESs) are frequency-robust but dependent on the input energy level for optimal control capacity.Two types of nonlinear-linear combined structural control methods including single-mass dampers and dual-mass dampers were proposed.Numerical models of a two-degree-of-freedom primary structure with different control devices attached respectively were constructed based on their equations of motion.The single-mass damper and dual-mass damper were optimized under impulsive excitations.The results show that the two combined methods exhibit similar effectiveness as an optimized TMD and NES and are able to maintain a relatively high robustness against the changes of frequency and energy level.Furthermore, the single-mass and dual-mass dampers can better reduce the structural responses under the earthquakes than both linear and nonlinear methods considering the uncertainty in input energy level and the frequency change in the primary structure.

Key words： structural control combined control nonlinear energy sink seismic response numerical simulation

收稿日期: 2017-11-16 出版日期: 2019-06-15

引用本文:

王菁菁，刘志彬，浩文明. 非线性-线性联合结构控制方法减震性能研究[J]. 振动与冲击, 2019, 38(12): 32-38.
WANG Jingjing, LIU Zhibin, HAO Wenming. Innovative nonlinear-linear structural control methods for seismic response reduction. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(12): 32-38.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I12/32

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