Numerical analysis of effective parameters in response of the nonlinear passive viscous systems

In this article all the effective parameters in response of nonlinear passive viscous systems are investigated. Here, the term response is referred to the maximum inter-story drift and maximum absolute acceleration of the stories. Inter-story drift is known as the structural failure index and maximu...

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Autores principales:	GholamReza Havaei, Alireza Zare
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2017
Materias:	passive system viscous damping strength stiffness brace stiffness Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/66ce616a64ca44fba98366fb26aec7da
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spelling	oai:doaj.org-article:66ce616a64ca44fba98366fb26aec7da2021-11-08T15:47:38ZNumerical analysis of effective parameters in response of the nonlinear passive viscous systems2476-39772538-261610.22065/jsce.2017.86867.1199https://doaj.org/article/66ce616a64ca44fba98366fb26aec7da2017-07-01T00:00:00Zhttps://www.jsce.ir/article_46854_8da5ec03cff699ed83030c82d115b97b.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616In this article all the effective parameters in response of nonlinear passive viscous systems are investigated. Here, the term response is referred to the maximum inter-story drift and maximum absolute acceleration of the stories. Inter-story drift is known as the structural failure index and maximum absolute acceleration is known as the nonstructural and acceleration sensitive equipment in buildings. Based on the results, the more effective parameters in these systems are initial stiffness and strength of the building, amount of supplemental damping used in the system, stiffness of the braces connecting the dampers to the building and number of the stories. In order to show the effect of each pre-mentioned parameters, many linear and nonlinear passive control systems were analyzed by the time history method. For decreasing the influence of dominant input frequency of the excitation record and also for generalization, two white noise time histories normalized to the 1g were used as the input excitation. The results show that reduction of stiffness and strength are the key parameters in reducing absolute acceleration and also increasing the brace stiffness and supplemental damping are the most effective parameters in reduction of inter-story drift. In other words, if in design of passive control systems, only increasing the damping of the system is considered, the absolute acceleration of the system may be increased and as the result the acceleration sensitive equipment will experience the most failure during the earthquake.GholamReza HavaeiAlireza ZareIranian Society of Structrual Engineering (ISSE)articlepassive systemviscousdampingstrengthstiffnessbrace stiffnessBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 4, Iss شماره ویژه 1, Pp 35-47 (2017)
institution	DOAJ
collection	DOAJ
language	FA
topic	passive system viscous damping strength stiffness brace stiffness Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	passive system viscous damping strength stiffness brace stiffness Bridge engineering TG1-470 Building construction TH1-9745 GholamReza Havaei Alireza Zare Numerical analysis of effective parameters in response of the nonlinear passive viscous systems
description	In this article all the effective parameters in response of nonlinear passive viscous systems are investigated. Here, the term response is referred to the maximum inter-story drift and maximum absolute acceleration of the stories. Inter-story drift is known as the structural failure index and maximum absolute acceleration is known as the nonstructural and acceleration sensitive equipment in buildings. Based on the results, the more effective parameters in these systems are initial stiffness and strength of the building, amount of supplemental damping used in the system, stiffness of the braces connecting the dampers to the building and number of the stories. In order to show the effect of each pre-mentioned parameters, many linear and nonlinear passive control systems were analyzed by the time history method. For decreasing the influence of dominant input frequency of the excitation record and also for generalization, two white noise time histories normalized to the 1g were used as the input excitation. The results show that reduction of stiffness and strength are the key parameters in reducing absolute acceleration and also increasing the brace stiffness and supplemental damping are the most effective parameters in reduction of inter-story drift. In other words, if in design of passive control systems, only increasing the damping of the system is considered, the absolute acceleration of the system may be increased and as the result the acceleration sensitive equipment will experience the most failure during the earthquake.
format	article
author	GholamReza Havaei Alireza Zare
author_facet	GholamReza Havaei Alireza Zare
author_sort	GholamReza Havaei
title	Numerical analysis of effective parameters in response of the nonlinear passive viscous systems
title_short	Numerical analysis of effective parameters in response of the nonlinear passive viscous systems
title_full	Numerical analysis of effective parameters in response of the nonlinear passive viscous systems
title_fullStr	Numerical analysis of effective parameters in response of the nonlinear passive viscous systems
title_full_unstemmed	Numerical analysis of effective parameters in response of the nonlinear passive viscous systems
title_sort	numerical analysis of effective parameters in response of the nonlinear passive viscous systems
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2017
url	https://doaj.org/article/66ce616a64ca44fba98366fb26aec7da
work_keys_str_mv	AT gholamrezahavaei numericalanalysisofeffectiveparametersinresponseofthenonlinearpassiveviscoussystems AT alirezazare numericalanalysisofeffectiveparametersinresponseofthenonlinearpassiveviscoussystems
_version_	1718441670184271872

Numerical analysis of effective parameters in response of the nonlinear passive viscous systems

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