Smart Structures and Systems

  • 제23권6호
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  • Pages.565-577
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  • 2019
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Multi-mode cable vibration control using MR damper based on nonlinear modeling

  • Huang, H.W. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • Liu, T.T. (Hunan Provincial Communications Planning, Survey & Design Institute Co., Ltd.) ;
  • Sun, L.M. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
  • 투고 : 2016.07.12
  • 심사 : 2019.01.25
  • 발행 : 2019.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

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.

키워드

과제정보

연구 과제 주관 기관 : Ministry of Science and Technology of China

참고문헌

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피인용 문헌

  1. Damping enhancement of the inerter on the viscous damper in mitigating cable vibrations vol.28, pp.1, 2019, https://doi.org/10.12989/sss.2021.28.1.089