Experimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading

By reviewing the literature on steel slit yield dampers (SSD), this study investigated and compared the effect of new strip shapes and geometric patterns on the behavior of this type of dampers. This study investigated a reference slit-less sample (solid) along with nine samples with a single row of...

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Autores principales:	Kianoosh Nik-Hoosh, Mohammad Ali Kafi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	yield damper cyclic loading linearly tapered blade elliptical slit damper effective stiffness effective damping Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/f26e62083aab44b08bb1ce66e9eb7480
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id	oai:doaj.org-article:f26e62083aab44b08bb1ce66e9eb7480
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spelling	oai:doaj.org-article:f26e62083aab44b08bb1ce66e9eb74802021-11-08T15:54:55ZExperimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading2476-39772538-261610.22065/jsce.2019.192250.1892https://doaj.org/article/f26e62083aab44b08bb1ce66e9eb74802021-07-01T00:00:00Zhttps://www.jsce.ir/article_93379_0d7a2103b819d92bf6ef640807d329fa.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616By reviewing the literature on steel slit yield dampers (SSD), this study investigated and compared the effect of new strip shapes and geometric patterns on the behavior of this type of dampers. This study investigated a reference slit-less sample (solid) along with nine samples with a single row of blades or slits and three different shapes and geometric patterns, namely simple or constant cross-section, linearly tapered cross-section, and parabolic tapered cross-section with an elliptical slit at three different heights. These samples were subjected to cyclic loading in the laboratory. After determining force-displacement hysteresis curves, the important behavioral parameters of the investigated SSDs were calculated and compared. Effective stiffness, effective damping, force capacity, and displacement under cyclic loading were among the considered parameters in the current study. Results showed that dampers with simple blades and elliptical slits exhibited the poorest and best performances, respectively. Findings also indicated that the elliptical damper offered the highest effective stiffness, greatest energy absorption, and specifically the longest durability to cyclic loads. At displacements larger than 5 mm, the increase in effective stiffness of samples with an elliptical slit was roughly 1.6 times greater than that of samples with linearly tapered cross-sections. The equivalent viscous damping within the aforementioned displacement range at the optimal dimensions for a sample with an elliptical slit was roughly 1.1 times greater than that in a sample with linearly tapered cross-section.Kianoosh Nik-HooshMohammad Ali KafiIranian Society of Structrual Engineering (ISSE)articleyield dampercyclic loadinglinearly tapered bladeelliptical slit dampereffective stiffnesseffective dampingBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 8, Iss 5, Pp 5-23 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	yield damper cyclic loading linearly tapered blade elliptical slit damper effective stiffness effective damping Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	yield damper cyclic loading linearly tapered blade elliptical slit damper effective stiffness effective damping Bridge engineering TG1-470 Building construction TH1-9745 Kianoosh Nik-Hoosh Mohammad Ali Kafi Experimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading
description	By reviewing the literature on steel slit yield dampers (SSD), this study investigated and compared the effect of new strip shapes and geometric patterns on the behavior of this type of dampers. This study investigated a reference slit-less sample (solid) along with nine samples with a single row of blades or slits and three different shapes and geometric patterns, namely simple or constant cross-section, linearly tapered cross-section, and parabolic tapered cross-section with an elliptical slit at three different heights. These samples were subjected to cyclic loading in the laboratory. After determining force-displacement hysteresis curves, the important behavioral parameters of the investigated SSDs were calculated and compared. Effective stiffness, effective damping, force capacity, and displacement under cyclic loading were among the considered parameters in the current study. Results showed that dampers with simple blades and elliptical slits exhibited the poorest and best performances, respectively. Findings also indicated that the elliptical damper offered the highest effective stiffness, greatest energy absorption, and specifically the longest durability to cyclic loads. At displacements larger than 5 mm, the increase in effective stiffness of samples with an elliptical slit was roughly 1.6 times greater than that of samples with linearly tapered cross-sections. The equivalent viscous damping within the aforementioned displacement range at the optimal dimensions for a sample with an elliptical slit was roughly 1.1 times greater than that in a sample with linearly tapered cross-section.
format	article
author	Kianoosh Nik-Hoosh Mohammad Ali Kafi
author_facet	Kianoosh Nik-Hoosh Mohammad Ali Kafi
author_sort	Kianoosh Nik-Hoosh
title	Experimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading
title_short	Experimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading
title_full	Experimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading
title_fullStr	Experimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading
title_full_unstemmed	Experimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading
title_sort	experimental investigation into effect of strip or slit geometric pattern on structural and seismic behavior of steel slit yield damper and determining optimal pattern under cyclic loading
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/f26e62083aab44b08bb1ce66e9eb7480
work_keys_str_mv	AT kianooshnikhoosh experimentalinvestigationintoeffectofstriporslitgeometricpatternonstructuralandseismicbehaviorofsteelslityielddamperanddeterminingoptimalpatternundercyclicloading AT mohammadalikafi experimentalinvestigationintoeffectofstriporslitgeometricpatternonstructuralandseismicbehaviorofsteelslityielddamperanddeterminingoptimalpatternundercyclicloading
_version_	1718441624702287872

Experimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading

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