Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
권호 표지
DOI QR코드

DOI QR Code

Preliminary Design Procedure of MR Dampers for Controlling Seismic Response of Building Structures

건축구조물의 지진응답제어를 위한 MR 감쇠기 예비설계절차

  • 이상현 (서울대학교 공학연구소) ;
  • 민경원 (단국대학교 건축대학 건축공학과) ;
  • 이루지 (단국대학교 건축대학 건축공학과) ;
  • 김중구 (고려정공주식회사)
  • Published : 2004.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, the preliminary design procedure of magnetorheological (MR) dampers is developed for controlling the building response induced by seismic excitation. The dynamic characteristics and control effects of the modeling methods of MR dampers such as Bingham, biviscous, hysteretic biviscous, simple Bouc?Wen, Bouc?Wen with mass element, and phenomenological models are investigated. Of these models, hysteretic biviscous model which is simple and capable describing the hysteretic characteristics, is used for numerical studies. The capacity of MR damper is determined as a portion of not the building weight but the lateral restoring force. A method is proposed for optimal placement and number of MR dampers, and its effectiveness is verified by comparing it with the simplified sequential search algorithm. Numerical results indicate that the capacity, number and the placement can be reasonably determined using the proposed design procedure.

본 연구의 목적은 건축구조물의 지진응답제어를 위한 MR 감쇠기의 크기, 개수 및 최적위치를 결정하는 설계절차를 제안하는 것이다. 기존의 연구에서 제안된 MR 감쇠기의 모델링 방법들의 특성과 차이점을 진동제어효과의 관점에서 분석하였으며, 이 모델 중 해석이 간단하고 이력특성을 모사할 수 있는 이력 이점성 모델을 사용하여 MR 감쇠기의 변수연구를 수행하였다. 건축구조물의 층간에 설치되는MR 감쇠장치의 용량은 지진응답의 경우 구조물의 주기와 감쇠비에 따라 층전단력이 다르게 됨을 고려하여, 20개의 지진하중에 대한 해석으로부터 구한 응답스펙트럼을 이용하여 결정하였으며, 설치 갯수에 따른 제어경향을 분석하였다. MR 감쇠기의 크기, 개수, 그리고 최적위치를 결정하기 위한 방법이 제안되었으며, 기존의 점성감쇠기 설계시 이용되는 층간변위 혹은 층간속도가 가장 큰 층에 순차적으로 설치하는 방법과의 비교를 통해 유효성을 검증하였다. 수치해석결과는 제안된 방법을 사용하여 MR 감쇠기의 크기, 개수, 그리고 위치를 합리적으로 결정할 수 있음을 보여준다.

Keywords

References

  1. Housner GW, Bergman LA, Caughey TK, Chassiakos AG, Claus RO, Masri SF, Skelton RE, Soong TT, Spencer BF Jr., and Yao JTP. 'Special issue structural control: past, present, and future,' Journal of Engineering Mechanics, ASCE ,1997, Vol.123, No.9, pp.897-971 https://doi.org/10.1061/(ASCE)0733-9399(1997)123:9(897)
  2. Brogan, W.L, Modern control theory, Prentice Hall, Englewood Cliffs, New Jersey,1991
  3. Jansen, LM and Dyke SJ. 'Semiactive control strategies for MR dampers: comparative study,' Journal of Engineering Mechanics, ASCE, Vol. 126, No 8, 2000, pp. 795-803 https://doi.org/10.1061/(ASCE)0733-9399(2000)126:8(795)
  4. Carlson JD and Spencer Jr. BF. 'Magnetorheological fluid dampers for semi-active seismic control,' Proceedings of 3rd International Conference on Motion and Vibration Control, vol. 3, Chiba, Japan, 1996. pp. 35-40
  5. Fujitani H, Sodeyama H, Hata K, Iwata N, Komatsu Y, Sunakoda K, and Soda S., 'Dynamic performance evaluation of magnetorheological damper,' Proceeding of International Conference on Advances in Structural Dynamics, vol. 1, Hong Kong, China, 2000, pp. 319-26
  6. Spencer Jr. BF, Dyke SJ, and Sain MK 'Magnetorheological dampers: a new approach to seismic protection of structures,' Proceedings of Conference on Decision and Control, Kobe, Japan, 1996, pp. 676-81
  7. Zhang RH and Soong T.T, 'Seismic design of viscoelastic dampers for structural application,' Journal of Structural Engineering ,ASCE, Vol.118, No.5, 1992, pp. 1375-1392 https://doi.org/10.1061/(ASCE)0733-9445(1992)118:5(1375)
  8. Shukla AK and Datta TK 'Optimal use of viscoe lastic dampers in building frames for seismic force,' Journal of Structural Engineering, Vol. 125, No.4, 1999, pp. 401-409 https://doi.org/10.1061/(ASCE)0733-9445(1999)125:4(401)
  9. Garcia D. Lopez and T.T Soong, 'Efficiency of a simple approach to damper allocation in MDOF structures,' Journal of Structures Control, Vol.9, No.I, 2002, pp. 19-30 https://doi.org/10.1002/stc.3
  10. Lee Sang-Hyun, Son Dong-In, Kim Jinkoo, and Kyung-Won Min, 'Optimal Design of Viscoelastic Dampers using Eigenvalue Assignment,' Earthquake Engineering & Structural Dynamics, Vol.33, No.4, 2004, pp. 521-542 https://doi.org/10.1002/eqe.364
  11. Filiatrault A. and Cherry S., 'Seismic Design Spectra for Friction-Damped Structures,' Journal of Structural Engineering, Vol.116, No.5, 1990, pp.1334-1355 https://doi.org/10.1061/(ASCE)0733-9445(1990)116:5(1334)
  12. Fu Yaomin and Cherry Sheldon, 'Design of friction damped structures using lateral force procedure,' Earthquake engineering and Structural Dynamics, Vol.29, No.7, 2000, pp. 989-1010 https://doi.org/10.1002/1096-9845(200007)29:7<989::AID-EQE950>3.0.CO;2-7
  13. Mahendra P. Singh and Luis M. Moreschi, 'Optimal seismic response control with dampers,' Earthquake engineering and Structural Dynamics, Vol.30, No.4, 2001, pp. 553-572 https://doi.org/10.1002/eqe.23
  14. Phillips RW. 'Engineering applications of fluids with a variable yield stress,' Ph.D thesis, University of California, Berkeley, California, 1969
  15. Stanway, R,. Sproston, J.L., and Stevens, N.G. 'Non-linear Modeling of an Electro-rheological Vibration Damper,' J. Electrostatics, Vol. 20, 1987, pp. 167-184 https://doi.org/10.1016/0304-3886(87)90056-8
  16. Garrota, D. R. and Filisko, F. E. 'Dynamic IreChanical studies of electrorheological materials: Moderate frequencies,' J. Rheology, Vol. 35, 1991, pp.399425 https://doi.org/10.1122/1.550221
  17. Wereley NM, Pang L, and Kamath GM. 'Idealized hysteresis modeling of electrorheological and magnetorheological dampers,' Journal of Intelligent Material, Systems and Structures, Vol. 9, No 8, 1998, pp. 642-649 https://doi.org/10.1177/1045389X9800900810
  18. Dyke SJ, Spencer Jr. BF, Sain MK, and Carlson JD. 'Modeling and control of magnetorheological dampers for seismic response reduction,' Smart Materials and Structures, Vol. 5, 1996, pp. 565575 https://doi.org/10.1088/0964-1726/5/5/006
  19. Spencer Jr. BF, Dyke SJ, Sain MK, and Carlson JD. 'Phenomenological model of a magnetorheological damper,' Journal of Engineering Mechanics, ASCE, Vol. 123, No.3, 1997, pp. 230-238 https://doi.org/10.1061/(ASCE)0733-9399(1997)123:3(230)
  20. Yang G., 'Large-scale magnetorheological Fluid Damper for Vibration Mitigation: Modeling, Testing and Control,' Ph.D thesis, University of Notre Dame, Indiana, 200l
  21. Yang G., B.F. Spencer, Jr., J.D. Carlsonb, and M.K. Sain, 'Large-scale MR fluid dampers: modeling, and dynamic performance considerations,' Engineering Structures, Vol. 24, No 3, 2002, pp. 309-323 https://doi.org/10.1016/S0141-0296(01)00097-9
  22. Lee Sang-Hyun, Min Kyung-Won, Lee YoungCheol, and Chung Lan, 'Improved Design of Sliding Mode Control for Civil Structures with Saturation Problem,' Earthquake Engineering & Structural Dynamics, Vol. 33, No.11, 2004, pp. 1147-1164 https://doi.org/10.1002/eqe.399

Cited by

  1. Bracing Systems for Installation of MR Dampers in a Building Structure vol.18, pp.11, 2007, https://doi.org/10.1177/1045389X06072371