Investigation of New Proposed Model for Mass Damper with Geometrically Nonlinear Stiffness

Many studies have been conducted showing that the mass damper improves the performance of structures against wind loads and seismic loads. This paper presents a model for passive tuned mass damper with softening stiffness; the Newton−Raphson method and state space were used to solve nonlinear equati...

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Autores principales:	Karim Badamchi, Mohammad Khalil Khalili, Kia Badamchi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	nonlinear tuned mass damper semi-active tuned mass damper softening stiffness nonlinear analysis the newton−raphson method geometrically nonlinear behavior Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/8089e2cd040c432a91439a6e537fb67b
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spelling	oai:doaj.org-article:8089e2cd040c432a91439a6e537fb67b2021-11-08T15:54:55ZInvestigation of New Proposed Model for Mass Damper with Geometrically Nonlinear Stiffness2476-39772538-261610.22065/jsce.2019.189443.1878https://doaj.org/article/8089e2cd040c432a91439a6e537fb67b2021-07-01T00:00:00Zhttps://www.jsce.ir/article_96679_e2f8aa3ce478f6f5bae198c1be1a7b1b.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Many studies have been conducted showing that the mass damper improves the performance of structures against wind loads and seismic loads. This paper presents a model for passive tuned mass damper with softening stiffness; the Newton−Raphson method and state space were used to solve nonlinear equations of motion. To evaluate the performance of the proposed mass damper, an 11-storied steel structure subjected to the Northridge and Zarand earthquakes was evaluated. This structure was initially modelled and analysed without a damper and with the softening PTMD. Then the effect of varying angles of the mass damper was investigated; eventually the damper was converted into a non-linear semi-active tuned mass damper. To reduce the displacements of the damper, fuzzy control was used for the controller. The results show that the proposed mass damper with a 60-degree angle could reduce the displacement in the earthquakes of Northridge and Zarand by 48.8 and 36.2% on an average. The results of using different angles suggest that a 45-degree angle makes for the most favourable performance for the structure and mass damper. It points out that in the use of an isolator for the 11th floor, this floor has the potential for higher displacement than any other floor, but, in this article, using the controller and the proposed semi-active damper, it has been shown that this floor can also experience lower displacement.Karim BadamchiMohammad Khalil KhaliliKia BadamchiIranian Society of Structrual Engineering (ISSE)articlenonlinear tuned mass dampersemi-active tuned mass dampersoftening stiffnessnonlinear analysisthe newton−raphson methodgeometrically nonlinear behaviorBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 8, Iss 5, Pp 163-178 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	nonlinear tuned mass damper semi-active tuned mass damper softening stiffness nonlinear analysis the newton−raphson method geometrically nonlinear behavior Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	nonlinear tuned mass damper semi-active tuned mass damper softening stiffness nonlinear analysis the newton−raphson method geometrically nonlinear behavior Bridge engineering TG1-470 Building construction TH1-9745 Karim Badamchi Mohammad Khalil Khalili Kia Badamchi Investigation of New Proposed Model for Mass Damper with Geometrically Nonlinear Stiffness
description	Many studies have been conducted showing that the mass damper improves the performance of structures against wind loads and seismic loads. This paper presents a model for passive tuned mass damper with softening stiffness; the Newton−Raphson method and state space were used to solve nonlinear equations of motion. To evaluate the performance of the proposed mass damper, an 11-storied steel structure subjected to the Northridge and Zarand earthquakes was evaluated. This structure was initially modelled and analysed without a damper and with the softening PTMD. Then the effect of varying angles of the mass damper was investigated; eventually the damper was converted into a non-linear semi-active tuned mass damper. To reduce the displacements of the damper, fuzzy control was used for the controller. The results show that the proposed mass damper with a 60-degree angle could reduce the displacement in the earthquakes of Northridge and Zarand by 48.8 and 36.2% on an average. The results of using different angles suggest that a 45-degree angle makes for the most favourable performance for the structure and mass damper. It points out that in the use of an isolator for the 11th floor, this floor has the potential for higher displacement than any other floor, but, in this article, using the controller and the proposed semi-active damper, it has been shown that this floor can also experience lower displacement.
format	article
author	Karim Badamchi Mohammad Khalil Khalili Kia Badamchi
author_facet	Karim Badamchi Mohammad Khalil Khalili Kia Badamchi
author_sort	Karim Badamchi
title	Investigation of New Proposed Model for Mass Damper with Geometrically Nonlinear Stiffness
title_short	Investigation of New Proposed Model for Mass Damper with Geometrically Nonlinear Stiffness
title_full	Investigation of New Proposed Model for Mass Damper with Geometrically Nonlinear Stiffness
title_fullStr	Investigation of New Proposed Model for Mass Damper with Geometrically Nonlinear Stiffness
title_full_unstemmed	Investigation of New Proposed Model for Mass Damper with Geometrically Nonlinear Stiffness
title_sort	investigation of new proposed model for mass damper with geometrically nonlinear stiffness
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/8089e2cd040c432a91439a6e537fb67b
work_keys_str_mv	AT karimbadamchi investigationofnewproposedmodelformassdamperwithgeometricallynonlinearstiffness AT mohammadkhalilkhalili investigationofnewproposedmodelformassdamperwithgeometricallynonlinearstiffness AT kiabadamchi investigationofnewproposedmodelformassdamperwithgeometricallynonlinearstiffness
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Investigation of New Proposed Model for Mass Damper with Geometrically Nonlinear Stiffness

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