An Innovative Steel Damper with a Flexural and Shear–Flexural Mechanism to Enhance the CBF System Behavior: An Experimental and Numerical Study
An innovative passive energy damper is introduced and studied experimentally and numerically. This damper is designed as the main plate for energy absorption which is surrounded by an octagon cover. In addition to simplicity in construction, it can be easily replaced after a severe earthquake. Exper...
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| Format: | Article |
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MDPI AG
2021-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/23/11454 |
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| author | Ali Ghamari Behroz Almasi Chang-hyuk Kim Seong-Hoon Jeong Kee-Jeung Hong |
| author_facet | Ali Ghamari Behroz Almasi Chang-hyuk Kim Seong-Hoon Jeong Kee-Jeung Hong |
| author_sort | Ali Ghamari |
| collection | DOAJ |
| description | An innovative passive energy damper is introduced and studied experimentally and numerically. This damper is designed as the main plate for energy absorption which is surrounded by an octagon cover. In addition to simplicity in construction, it can be easily replaced after a severe earthquake. Experimental test results, as well as finite element results, indicated that, by connecting the cross-flexural plate to the main plate, the mechanism of the plate was changed from flexural to shear. However, the cross_flexural plate always acts as a flexural mechanism. Changing the shear mechanism to a flexural mechanism, on the other hand, increased the stiffness and strength, while it reduced the ultimate displacement. Comparing the hysteresis curve of specimens revealed that models without cross_flexural plates had less strength and energy_dissipating capability than other models. Adding the flexural plate to the damper without connecting to the main plate improved the behavior of the damper, mainly by improving the ultimate displacement. Connecting the cross plate to the web plate enhanced the ultimate strength and stiffness by 84% and 3.9, respectively, but it reduced the ductility by 2.25. Furthermore, relationships were proposed to predict the behavior of the dampers with high accuracy. |
| first_indexed | 2024-03-10T04:57:12Z |
| format | Article |
| id | doaj.art-622347ca48cd40d39ae91f6bd0d5a37c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T04:57:12Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-622347ca48cd40d39ae91f6bd0d5a37c2023-11-23T02:08:27ZengMDPI AGApplied Sciences2076-34172021-12-0111231145410.3390/app112311454An Innovative Steel Damper with a Flexural and Shear–Flexural Mechanism to Enhance the CBF System Behavior: An Experimental and Numerical StudyAli Ghamari0Behroz Almasi1Chang-hyuk Kim2Seong-Hoon Jeong3Kee-Jeung Hong4Department of Civil Engineering, Ilam Branch, Islamic Azad University, Ilam 693113314, IranDepartment of Civil Engineering, Aria University of Science and Sustainability, Tehran 3591410799, IranDepartment of Architectural Engineering, Inha University, Incheon 22212, KoreaDepartment of Architectural Engineering, Inha University, Incheon 22212, KoreaSchool of Civil and Environmental Engineering, Kookmin University, Seoul 02707, KoreaAn innovative passive energy damper is introduced and studied experimentally and numerically. This damper is designed as the main plate for energy absorption which is surrounded by an octagon cover. In addition to simplicity in construction, it can be easily replaced after a severe earthquake. Experimental test results, as well as finite element results, indicated that, by connecting the cross-flexural plate to the main plate, the mechanism of the plate was changed from flexural to shear. However, the cross_flexural plate always acts as a flexural mechanism. Changing the shear mechanism to a flexural mechanism, on the other hand, increased the stiffness and strength, while it reduced the ultimate displacement. Comparing the hysteresis curve of specimens revealed that models without cross_flexural plates had less strength and energy_dissipating capability than other models. Adding the flexural plate to the damper without connecting to the main plate improved the behavior of the damper, mainly by improving the ultimate displacement. Connecting the cross plate to the web plate enhanced the ultimate strength and stiffness by 84% and 3.9, respectively, but it reduced the ductility by 2.25. Furthermore, relationships were proposed to predict the behavior of the dampers with high accuracy.https://www.mdpi.com/2076-3417/11/23/11454damperflexural yieldingstiffnessstrengthhysteresis curve |
| spellingShingle | Ali Ghamari Behroz Almasi Chang-hyuk Kim Seong-Hoon Jeong Kee-Jeung Hong An Innovative Steel Damper with a Flexural and Shear–Flexural Mechanism to Enhance the CBF System Behavior: An Experimental and Numerical Study Applied Sciences damper flexural yielding stiffness strength hysteresis curve |
| title | An Innovative Steel Damper with a Flexural and Shear–Flexural Mechanism to Enhance the CBF System Behavior: An Experimental and Numerical Study |
| title_full | An Innovative Steel Damper with a Flexural and Shear–Flexural Mechanism to Enhance the CBF System Behavior: An Experimental and Numerical Study |
| title_fullStr | An Innovative Steel Damper with a Flexural and Shear–Flexural Mechanism to Enhance the CBF System Behavior: An Experimental and Numerical Study |
| title_full_unstemmed | An Innovative Steel Damper with a Flexural and Shear–Flexural Mechanism to Enhance the CBF System Behavior: An Experimental and Numerical Study |
| title_short | An Innovative Steel Damper with a Flexural and Shear–Flexural Mechanism to Enhance the CBF System Behavior: An Experimental and Numerical Study |
| title_sort | innovative steel damper with a flexural and shear flexural mechanism to enhance the cbf system behavior an experimental and numerical study |
| topic | damper flexural yielding stiffness strength hysteresis curve |
| url | https://www.mdpi.com/2076-3417/11/23/11454 |
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