| Vibration Control of Multi-Tuned Mass Dampers for An Offshore Oil Platform |
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| 作者姓名： | LU Jianhui |
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| 作者单位： | College of Engineering，Ocean University of Qingdao，Qingdao 266071，China，College of Engineering，Ocean University of Qingdao，Qingdao 266071，China，College of Engineering，Ocean University of Qingdao，Qingdao 266071，China，College of Engineering，Ocean University of Qingdao，Qingdao 266071，China |
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| 摘 要： | The purpose of this study is to investigate the effectiveness of multi-tuned mass dampers (MTMD) on mitigating vi-bration of an offshore oil platform subjected to ocean wave loading. An optimal design method is used to determine the optimal damper parameters under ocean wave loading. The force on the structure is determined by use of the linearized Morison equation. Investigation on the deck motion with and vvithout MTMD on the structure is made under design condi-tions. The results show that MTMD with the optimized parameters suppress the response of each structural mode. The sensitivity of optimum values of MTMD to characteristic wave parameters is also analyzed. it is indicated that a single TMD on the deck of a platform can have the best performance, and the small the damping value of TMD, the betler the vibration control.
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Vibration Control of Multi-Tuned Mass Dampers for An Offshore Oil Platform |
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| LU Jianhui MEI Ning
LI Yusheng and SHI Xiang
College of Engineering,Ocean Urdversity of Cingdao,Qingdao ,China.Vibration Control of Multi-Tuned Mass Dampers for An Offshore Oil Platform[J].China Ocean Engineering,2002,16(3):321-328. |
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| Authors: | LU Jianhui MEI Ning
LI Yusheng and SHI Xiang
College of Engineering Ocean Urdversity of Cingdao Qingdao China |
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| Institution: | College of Engineering, Ocean University of Qingdao, Qingdao 266071, China College of Engineering, Ocean University of Qingdao, Qingdao 266071, China College of Engineering, Ocean University of Qingdao, Qingdao 266071, China College of Engineering, Ocean University of Qingdao, Qingdao 266071, China |
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| Abstract: | The purpose of this study is to investigate the effectiveness of multi-tuned mass dampers (MTMD) on mitigating vi-bration of an offshore oil platform subjected to ocean wave loading. An optimal design method is used to determine the optimal damper parameters under ocean wave loading. The force on the structure is determined by use of the linearized Morison equation. Investigation on the deck motion with and vvithout MTMD on the structure is made under design condi-tions. The results show that MTMD with the optimized parameters suppress the response of each structural mode. The sensitivity of optimum values of MTMD to characteristic wave parameters is also analyzed. it is indicated that a single TMD on the deck of a platform can have the best performance, and the small the damping value of TMD, the betler the vibration control. |
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| Keywords: | offshore structure multi-tuned mass damper structural vibration optimal design |
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