非线性-线性联合结构控制方法减震性能研究

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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

Received: 16 November 2017 Published: 15 June 2019

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	WANG Jingjing
	LIU Zhibin
	HAO Wenming

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WANG Jingjing,LIU Zhibin,HAO Wenming. Innovative nonlinear-linear structural control methods for seismic response reduction[J]. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(12): 32-38.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2019/V38/I12/32

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