Application of broadband nonlinear targeted energy transfers for seismic mitigation of a shear frame: Computational results

Nucera, F; McFarland, DM; Bergman, LA; Vakakis, AF

dc.contributor.author	Nucera, F	en
dc.contributor.author	McFarland, DM	en
dc.contributor.author	Bergman, LA	en
dc.contributor.author	Vakakis, AF	en
dc.date.accessioned	2014-03-01T01:32:46Z
dc.date.available	2014-03-01T01:32:46Z
dc.date.issued	2010	en
dc.identifier.issn	0022-460X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20222
dc.subject	Degree of Freedom	en
dc.subject	Energy Transfer	en
dc.subject	Evaluation Criteria	en
dc.subject	Seismic Response	en
dc.subject	Structural Model	en
dc.subject	Vibration Control	en
dc.subject	Nonlinear Energy Sink	en
dc.subject.classification	Acoustics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Computational results	en
dc.subject.other	Earthquake records	en
dc.subject.other	Evaluation criteria	en
dc.subject.other	Frame structure	en
dc.subject.other	Non-Linearity	en
dc.subject.other	Nonlinear energy sink	en
dc.subject.other	Seismic excitations	en
dc.subject.other	Seismic mitigation	en
dc.subject.other	Seismic protection	en
dc.subject.other	Seismic vibrations	en
dc.subject.other	Shear frames	en
dc.subject.other	Story shear	en
dc.subject.other	Structural seismic response	en
dc.subject.other	Test structure	en
dc.subject.other	Vibro-impact	en
dc.subject.other	Earthquakes	en
dc.subject.other	Energy transfer	en
dc.subject.other	Floors	en
dc.title	Application of broadband nonlinear targeted energy transfers for seismic mitigation of a shear frame: Computational results	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jsv.2010.01.020	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jsv.2010.01.020	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	In this work we show that it is possible to successfully apply the concept of nonlinear targeted energy transfer (TET) to seismic protection of structures; moreover, this passive strategy of seismic vibration control is found to be feasible and robust. We consider a three-story shear-frame structure, modeled as a three-degree-of-freedom system, subjected to four historic earthquakes as seismic excitation. Seismic mitigation is achieved by applying single or multiple nonlinear energy sinks (NESs) to the test structure. We study the performance and efficiency of the NESs through a set of evaluation criteria. First we consider a single vibro-impact NES (VI NES) applied to the top floor of the structure. In order to assess the robustness of the VI NES, the NES parameters are optimized for a specific seismic excitation (Kobe), and then tested against the three other earthquake records to demonstrate effectiveness of the NES for these cases as well. To further improve the effectiveness of the seismic mitigation, we then consider a system of two NESs-an NES with smooth nonlinearity at the top floor of the test structure and a VI NES at the bottom floor. We show that it is indeed possible to drastically reduce the structural seismic response (e.g., displacements, drifts, and accelerations) using this configuration. (C) 2010 Elsevier Ltd. All rights reserved.	en
heal.publisher	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD	en
heal.journalName	Journal of Sound and Vibration	en
dc.identifier.doi	10.1016/j.jsv.2010.01.020	en
dc.identifier.isi	ISI:000277645300001	en
dc.identifier.volume	329	en
dc.identifier.issue	15	en
dc.identifier.spage	2973	en
dc.identifier.epage	2994	en