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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| Format: | Article |
| Language: | fas |
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Iranian Society of Structrual Engineering (ISSE)
2021-07-01
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| Series: | Journal of Structural and Construction Engineering |
| Subjects: | |
| Online Access: | https://www.jsce.ir/article_93379_0d7a2103b819d92bf6ef640807d329fa.pdf |
| _version_ | 1819041138356518912 |
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| author | Kianoosh Nik-Hoosh Mohammad Ali Kafi |
| author_facet | Kianoosh Nik-Hoosh Mohammad Ali Kafi |
| author_sort | Kianoosh Nik-Hoosh |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-21T09:20:14Z |
| format | Article |
| id | doaj.art-f26e62083aab44b08bb1ce66e9eb7480 |
| institution | Directory Open Access Journal |
| issn | 2476-3977 2538-2616 |
| language | fas |
| last_indexed | 2024-12-21T09:20:14Z |
| publishDate | 2021-07-01 |
| publisher | Iranian Society of Structrual Engineering (ISSE) |
| record_format | Article |
| series | Journal of Structural and Construction Engineering |
| spelling | doaj.art-f26e62083aab44b08bb1ce66e9eb74802022-12-21T19:09:02ZfasIranian Society of Structrual Engineering (ISSE)Journal of Structural and Construction Engineering2476-39772538-26162021-07-018552310.22065/jsce.2019.192250.189293379Experimental 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 LoadingKianoosh Nik-Hoosh0Mohammad Ali Kafi1Ph.D student in Structural Engineering, Faculty of Civil Engineering, Semnan University, Semnan, IranAssociate Professor, Faculty of Civil Engineering, Semnan University, Semnan, IranBy 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.https://www.jsce.ir/article_93379_0d7a2103b819d92bf6ef640807d329fa.pdfyield dampercyclic loadinglinearly tapered bladeelliptical slit dampereffective stiffnesseffective damping |
| spellingShingle | 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 Journal of Structural and Construction Engineering yield damper cyclic loading linearly tapered blade elliptical slit damper effective stiffness effective damping |
| 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_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_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_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 |
| topic | yield damper cyclic loading linearly tapered blade elliptical slit damper effective stiffness effective damping |
| url | https://www.jsce.ir/article_93379_0d7a2103b819d92bf6ef640807d329fa.pdf |
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