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

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

dc.contributor.author	Nucera, F	en
dc.contributor.author	Lo Iacono, F	en
dc.contributor.author	McFarland, DM	en
dc.contributor.author	Bergman, LA	en
dc.contributor.author	Vakakis, AF	en
dc.date.accessioned	2014-03-01T01:27:56Z
dc.date.available	2014-03-01T01:27:56Z
dc.date.issued	2008	en
dc.identifier.issn	0022-460X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18643
dc.subject	Energy Transfer	en
dc.subject	Evaluation Criteria	en
dc.subject	Experimental Tests	en
dc.subject	Experimental Validation	en
dc.subject	Seismic Response	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	Broadband networks	en
dc.subject.other	Energy transfer	en
dc.subject.other	Nonlinear distortion	en
dc.subject.other	Robust control	en
dc.subject.other	Shear strength	en
dc.subject.other	Stiffness matrix	en
dc.subject.other	Vibration control	en
dc.subject.other	Nonlinear energy sinks (NES)	en
dc.subject.other	Response levels	en
dc.subject.other	Shear-frame structure	en
dc.subject.other	Targeted energy transfers (TET)	en
dc.subject.other	Seismic response	en
dc.title	Application of broadband nonlinear targeted energy transfers for seismic mitigation of a shear frame: Experimental results	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jsv.2007.11.018	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jsv.2007.11.018	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	In an earlier work we showed computationally that it is possible to successfully employ nonlinear targeted energy transfers (TETs) for seismic mitigation. Moreover, we demonstrated that this passive strategy of seismic vibration control was feasible and robust. In this work, we report experimental validation of these results by performing a series of experimental tests with a three-story shear-frame structure under seismic excitation in the form of two different historic earthquakes. As in the computational part of this work, the experimental seismic mitigation design consists of either a single nonlinear energy sink or a combination of two nonlinear energy sinks (NESs) attached at floors of the test structure. We study the performance and efficiency of the NES(s) through a set of certain evaluation criteria. With a single vibro-impact NES (VI NES) applied to the top floor of the test structure, we find significant reduction of the response levels. To further improve the effectiveness of the seismic mitigation design, we consider a combination of two NESs-an NES with smooth stiffness nonlinearity at the top floor and a VI NES at the bottom floor of the test structure-and show dramatic reduction of the structural seismic response. Robustness of the proposed designs is addressed. (c) 2007 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.2007.11.018	en
dc.identifier.isi	ISI:000255563100006	en
dc.identifier.volume	313	en
dc.identifier.issue	1-2	en
dc.identifier.spage	57	en
dc.identifier.epage	76	en