지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.23 No.6
- 발행연도
- 2019.1
- 수록면
- 565 - 577 (13page)
이용수
초록· 키워드
오류제보하기
One of the most effective countermeasures for mitigating cable vibration is to install mechanical dampers near the anchorage of the cable. Most of the dampers used in the field are so-called passive dampers where their parameters cannot be changed once designed. The parameters of passive dampers are usually determined based on the optimal damper force obtained from the universal design curve for linear dampers, which will provide a maximum additional damping for the cable. As the optimal damper force is chosen based on a predetermined principal vibration mode, passive dampers will be most effective if cable undergoes single-mode vibration where the vibration mode is the same as the principal mode used in the design. However, in the actual engineering practice, multi-mode vibrations are often observed for cables. Therefore, it is desirable to have dampers that can suppress different modes of cable vibrations simultaneously. In this paper, MR dampers are proposed for controlling multi-mode cable vibrations, because of its ability to change parameters and its adaptability of active control without inquiring large power resources. Although the highly nonlinear feature of the MR material leads to a relatively complex representation of its mathematical model, effective control strategies can still be derived for suppressing multi-mode cable vibrations based on nonlinear modelling, as proposed in this paper. Firstly, the nonlinear Bouc-wen model is employed to accurately portray the salient characteristics of the MR damper. Then, the desired optimal damper force is determined from the universal design curve of friction dampers. Finally, the input voltage (current) of MR damper corresponding to the desired optimal damper force is calculated from the nonlinear Bouc-wen model of the damper using a piecewise linear interpolation scheme. Numerical simulations are carried out to validate the effectiveness of the proposed control algorithm for mitigating multi-mode cable vibrations induced by different external excitations.
목차
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참고문헌 (25)
참고문헌 신청
Z.Q. Chen / 2004 / MR damping system for mitigating wind-rain induced vibration on Dongting Lake Cable-Stayed Bridge / Wind and Structures, An International Journal 7(5):293~304
Y. F. Duan / 2005 / State-Derivative Feedback Control of Cable Vibration Using Semiactive Magnetorheological Dampers / Computer-Aided Civil and Infrastructure Engineering 20(6):431~449
Y. F. Duan / 2016 / Cable Vibration Control using Magnetorheological Dampers / Journal of Intelligent Material Systems and Structures 17(4):321~325
Yuanfeng Duan / 2019 / Design formulas for vibration control of taut cables using passive MR dampers / Smart Structures and Systems, An International Journal 23(6):521~536
Yuanfeng Duan / 2019 / Design formulas for vibration control of sagged cables using passive MR dampers / Smart Structures and Systems, An International Journal 23(6):537~551
Y. F. Duan / 2005 / State-Derivative Feedback Control of Cable Vibration Using Semiactive Magnetorheological Dampers / Computer-Aided Civil and Infrastructure Engineering 20(6):431~449
Y. F. Duan / 2016 / Cable Vibration Control using Magnetorheological Dampers / Journal of Intelligent Material Systems and Structures 17(4):321~325
Yuanfeng Duan / 2019 / Design formulas for vibration control of taut cables using passive MR dampers / Smart Structures and Systems, An International Journal 23(6):521~536
Yuanfeng Duan / 2019 / Design formulas for vibration control of sagged cables using passive MR dampers / Smart Structures and Systems, An International Journal 23(6):537~551
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