Journal of the Computational Structural Engineering Institute of Korea (한국전산구조공학회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
권호 표지

Performance Evaluation of the New Smart Passive Control Device using Shaking Table Test

진동대 실험을 통한 신개념 스마트 수동제진장치의 제진성능 평가

  • Received : 2009.07.15
  • Accepted : 2009.10.12
  • Published : 2010.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents the vibration control performance of the smart passive control system to suppress the undesired vibration of the structure subjected to the earthquake loadings. Smart passive control system is the MR damper-based control system augmented with electromagnetic induction(EMI) device which consists of permanent magnets and solenoid coils. According to the Faraday's law of electromagnetic induction, an EMI device produces electrical energy from the mechanical energy due to the reciprocal motions of the structure and provide it to the MR damper. The smart passive control system can be the simple and easy to implement and maintain control system by replacing the feedback control system including sensors, controllers and external power sources of the conventional MR damper-based semiactive control system with the EMI device. The control performance of the smart passive control system is evaluated through the set of shaking table test considering the various historical earthquake loadings.

본 논문에서는 지진이나 강풍과 같은 동적하중으로부터 구조물을 효과적으로 보호하기 위한 MR 감쇠기 기반의 스마트수동시스템의 제진성능을 파악하였다. 스마트 수동시스템은 MR 감쇠기와 MR 감쇠기의 전력원으로 사용하기 위한 전자기유도(Electromagnetic Induction, EMI)장치를 결합시킨 시스템이다. EMI 장치는 영구자석과 코일로 이루어져 있으며, MR감쇠기와 같이 구조물에 설치되어 구조물의 상대변위에 의해 발생하는 운동에너지를 Faraday의 전자기유도법칙에 따라 전기에너지로 변환시켜 감쇠특성을 변화시키기 위해 MR 감쇠기에 제공하게 된다. 스마트 수동 제어시스템은 기존의 MR 감쇠기 기반 반능동 제진시스템에서 필요로 하는 센서, 제어기, 전원공급장치 등의 피드백 제어시스템을 EMI 장치로 대체함으로써 훨씬 간편하고 설치 및 유지관리가 용이하게 된다. 본 연구에서는 6층 규모의 철골 구조물을 대상으로 다양한 역사지진 하중에 대한 진동대 실험을 통해 스마트 수동 제어시스템의 제진성능을 확인하였다.

Keywords

References

  1. Cho, S.W., Jung, H.J., Lee, I.W. (2005) Smart Passive System Based on Magnetorheological Damper, Smart Materials and Structures,14, pp.707-714. https://doi.org/10.1088/0964-1726/14/4/029
  2. Choi, K.M., Jung, H.J., Cho, S.W., Lee, I.W. (2007) Application of Smart Passive Damping System using MR Damper to Highway Bridge Structure, Journal of Mechanical Science and Technology, 21, 870-874. https://doi.org/10.1007/BF03027060
  3. Dyke, S.J., Spencer, B.F. Jr., Sain, M.K., Carlson, J.D. (1996) Modeling and Control of Magnetorheological Dampers for Seismic Response Reduction, Smart Materials and Structures, 5, pp.565-575. https://doi.org/10.1088/0964-1726/5/5/006
  4. Inaudi, J.A. (1997) Modulated Homogeneous Friction: A Semi-active Damping Strategy, Earthquake Engineering and Structural Dynamics, 26, pp. 361-376. https://doi.org/10.1002/(SICI)1096-9845(199703)26:3<361::AID-EQE648>3.0.CO;2-M
  5. Jansen, L.M., Dyke, S.J. (2000) Semiactive Control Strategies of Magnetorheological Dampers for Seismic Response, Smart Materials and Structures,126, pp.795-803.
  6. Jung, H.J., Choi, K.M., Park, K.S., Cho, S.W. (2007) Seismic Protection of Base Isolated Structures using Smart Passive Control System, Smart Structures and Systems, 13, pp.385-403.
  7. Jung, H.J., Jang, D.D., Lee, H.J., Cho, S.W. (2008) Large-scale Smart Passive System for Civil Engineering Application, Proceedings of SPIE Conference on Sensors and Smart Structures Technologies for Civil, Mechanical and Aerospace Systems 2008, SPIE Vol. 6931, 39320T-1, SanDie 해, USA, 9-12 March 2008.
  8. Kamath, G.M., Wereley, N.M. (1997) A Nonlinear Viscoelastic-plastic Model for Electrorheological Fluids, Smart Material and dStructures, 6, pp.351-359. https://doi.org/10.1088/0964-1726/6/3/012
  9. McClamroch, N.H., Gavin, H.P. (1995) Closed Loop Structural Control Using Electrorheological Dampers, Proc., Am. Control Conf., American Automatic Control Council, Washington, D.C., pp.4173-4177.
  10. Soong, T.T. (1990) Active Structural Control: Theory and Practice, Essex: Longman Scientific and Technical.
  11. Spencer, B.F. Jr., Dyke, S.J., Sain, M.K., Carlson, J.D. (1997) Phenomenological Model of a Magnetorheological Damper, Journal of Engineering Mechanics, ASCE, 123, pp.230-238. https://doi.org/10.1061/(ASCE)0733-9399(1997)123:3(230)
  12. Yang, G., Spencer, B.F. Jr., Carlson, J.D., Sain, M.K. (2002) Large-scale MR Fluid Dampers: Modeling, and Dynamic Performance Considerations, Engineering Structures, 30(3), pp. 309-323.