Prototype Test and Numerical Analysis of a Shallow Cable with Novel Viscous Inertial Damper
As an essential component of offshore bridges, stay cables are prone to vibrations due to their low inherent damping characteristics. Various dampers have been used for cable vibration control; however, the experimental research and theoretical study of inertial dampers on real cables have not been...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/5322548 |
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| _version_ | 1832549001799401472 |
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| author | Jing Liu Dong Liang Liu Yang Lida Wang Xiaowei Zhang |
| author_facet | Jing Liu Dong Liang Liu Yang Lida Wang Xiaowei Zhang |
| author_sort | Jing Liu |
| collection | DOAJ |
| description | As an essential component of offshore bridges, stay cables are prone to vibrations due to their low inherent damping characteristics. Various dampers have been used for cable vibration control; however, the experimental research and theoretical study of inertial dampers on real cables have not been conducted sufficiently. This study aims to investigate the damping performance of a novel viscous inertial damper (VID) and focuses on the frequency-dependent and displacement amplification phenomena of a cable-damper system. Tests were first conducted to verify the energy consumption capacity of a prototype damper. A shallow cable-VID system was established. Theoretically, complex-valued modes were analyzed to determine the influence of the inertial and viscous coefficients on the cable’s frequency and mode damping ratio. The test results and numerical analysis show that the VID has a good damping effect on the shallow cable. Considering multiple adjacent cable modes, the inertial and viscous coefficients can be optimized. After optimizing, the VID can simultaneously maximize both adjacent symmetric and antisymmetric modes’ damping ratios. The two frequencies are almost the same. The displacement amplification of the VID shows that a VID can overcome the shortcomings of displacement loss caused by traditional oil dampers. The implications of these findings of the VID on shallow cable are discussed, which will guide future research and applications of the VID or other inerter dampers. |
| format | Article |
| id | doaj-art-0616cf246b384709896fe353b06cdc15 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-0616cf246b384709896fe353b06cdc152025-02-03T06:12:20ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/53225485322548Prototype Test and Numerical Analysis of a Shallow Cable with Novel Viscous Inertial DamperJing Liu0Dong Liang1Liu Yang2Lida Wang3Xiaowei Zhang4School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, ChinaSchool of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, ChinaSchool of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, ChinaSchool of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, ChinaSchool of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, ChinaAs an essential component of offshore bridges, stay cables are prone to vibrations due to their low inherent damping characteristics. Various dampers have been used for cable vibration control; however, the experimental research and theoretical study of inertial dampers on real cables have not been conducted sufficiently. This study aims to investigate the damping performance of a novel viscous inertial damper (VID) and focuses on the frequency-dependent and displacement amplification phenomena of a cable-damper system. Tests were first conducted to verify the energy consumption capacity of a prototype damper. A shallow cable-VID system was established. Theoretically, complex-valued modes were analyzed to determine the influence of the inertial and viscous coefficients on the cable’s frequency and mode damping ratio. The test results and numerical analysis show that the VID has a good damping effect on the shallow cable. Considering multiple adjacent cable modes, the inertial and viscous coefficients can be optimized. After optimizing, the VID can simultaneously maximize both adjacent symmetric and antisymmetric modes’ damping ratios. The two frequencies are almost the same. The displacement amplification of the VID shows that a VID can overcome the shortcomings of displacement loss caused by traditional oil dampers. The implications of these findings of the VID on shallow cable are discussed, which will guide future research and applications of the VID or other inerter dampers.http://dx.doi.org/10.1155/2021/5322548 |
| spellingShingle | Jing Liu Dong Liang Liu Yang Lida Wang Xiaowei Zhang Prototype Test and Numerical Analysis of a Shallow Cable with Novel Viscous Inertial Damper Shock and Vibration |
| title | Prototype Test and Numerical Analysis of a Shallow Cable with Novel Viscous Inertial Damper |
| title_full | Prototype Test and Numerical Analysis of a Shallow Cable with Novel Viscous Inertial Damper |
| title_fullStr | Prototype Test and Numerical Analysis of a Shallow Cable with Novel Viscous Inertial Damper |
| title_full_unstemmed | Prototype Test and Numerical Analysis of a Shallow Cable with Novel Viscous Inertial Damper |
| title_short | Prototype Test and Numerical Analysis of a Shallow Cable with Novel Viscous Inertial Damper |
| title_sort | prototype test and numerical analysis of a shallow cable with novel viscous inertial damper |
| url | http://dx.doi.org/10.1155/2021/5322548 |
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