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

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
권호 표지

Semi-Active Control System Based on the Experimental Results of the Performance of a Small Scale MR Damper

소형 MR감쇠기의 성능 실험에 기초한 준능동 제어 시스템

  • Published : 2006.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, mixed mode magneto-rheological(MR) damper, which is applicable for vibration control of a small scale multi-story structure, is devised. First, the schematic configurations of the shear, flow, and mixed mode MR dampers are described with design constraints and then the analytical models to predict the field-dependent damping forces are derived for each type. Second, an appropriate size of the mixed mode MR damper is manufactured and its field-dependent damping characteristics are evaluated in time domain. Finally, the performance of the manufactured MR damper which is semi-actively applied to a small scale building excited by earthquake load, is numerically evaluated.

이 논문에서는 소형 다층 구조물의 진동제어에 적용하기 위한 복합모드의 자기유변유체(MR) 감쇠기를 개발하였다. 우선, 도식적으로 전단, 유동, 복합모드 MR감쇠기의 형태를 설계조건과 함께 표현하였고, 각각의 모드에 대하여 자기장에 따른 감쇠력을 예측하기 위한 해석모델을 유도하였다. 다음으로 적당한 크기의 복합모드 MR감쇠기를 제작하고 자기장에 따른 감쇠특성을 시간영역에서 평가하였다. 마지막으로 지진하중을 받는 소형구조물에 제작된 MR감쇠기가 준능동 제어기로 제어하였을 때의 성능을 수치적으로 평가하였다.

Keywords

References

  1. Bolter, R., Janocha, H. (1997), Design Rules for MRFluid Actuators in Different Working Modes, Proceedings of the SPIE's 1997 Symposium on Smart Structures and Materials, 3045, pp. 148-159
  2. Carlson, J.D., Cantanzarite D.M., Clair, K.A.St. (1995), Commercial Magneto-rheological Fluid Devices, Proceedings of the 5th International Conference on Electro-Rheological Fluids, MagnetoRheological Suspensions and Associated Technology, pp.20-28
  3. Dyke, S.J., Spencer, B.F.Jr., Sain, M.K., Carlson, J.D. (1996). Modeling and Control of Magnetorheological Dampers for Seismic Response Control. Smart Materials and Structures. 5. pp.565-575 https://doi.org/10.1088/0964-1726/5/5/006
  4. Jolly, M.H., Bender, J.W., Carlson. J.D. (1998). Properties and Applications of Commercial Magnetorheological Fluids. SPIE. 3327. pp.262-275
  5. Lord Corporation (2003). Hydrocarbon-Based MRFluid MRF-132AD Product Bulletin
  6. Lee. H.G., Choi. S.B., Cheong. C.C. (1999). Characteristics of ER Fluids with Different Working Modes. Proceedings of the KSME 1999 Fall Annual Meeting B. pp.688-693
  7. Lee, H.G., Sung, K.G., Choi, S.B., Min, K.W., Lee, S.H. (2004). Vibration Control of a Multy-story Structure Featuring a Semi-active Double-rod MRDampe. ER Fluids and MRSuspensions. Beijing. China. August 29-September 3
  8. Spencer, B.F.Jr., Dyke, S.J., Sain, M.K., Carlson. J. D. (1997), Phenomenological Model of a Magneto-rheological Damper. Journal of Engineering Mechanics ASCE. 123(3). pp.230-238 https://doi.org/10.1061/(ASCE)0733-9399(1997)123:3(230)
  9. Spencer, B.F.Jr., Sain, M.K., Carlson, J.D. (1996), Seismic Response Reduction Using Magnetorheological Dampes. Proceedings of the IFAC World Congress. 1. pp.145-150