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Feasibility Study of MR Elastomer-based Base Isolation System  

Jang, Dong-Doo (KAIST 건설 및 환경공학과)
Usman, Muhammad (KAIST 건설 및 환경공학과)
Sung, Seung-Hoon (KAIST 건설 및 환경공학과)
Moon, Yeong-Jong (삼성건설 기술연구소)
Jung, Hyung-Jo (KAIST 건설 및 환경공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.21, no.6, 2008 , pp. 597-605 More about this Journal
Abstract
The feasibility study of a newly proposed smart base isolation system employing magneto-rheological elastomers(MREs) has been carried out. MREs belong to a class of smart materials whose elastic modulus or stiffness can be adjusted by varying the magnitude of the magnetic field. The base isolation systems are considered as one of the most effective devices for vibration mitigation of civil engineering structures such as bridges and buildings in the event of earthquakes. The proposed base isolation system strives to enhance the performance of the conventional base isolation system by improving the robustness of the system wide stiffness range controllable of MREs, which improves the adaptability and helps in better vibration control. To validate the effectiveness of the MRE-based isolation system, an extensive numerical simulation study has been performed using both single-story and five-story building structures employing base isolated devices under several historical earthquake excitations. The results show that the proposed system outperformed the conventional system in reducing the responses of the structure in all the seismic excitations considered in the study.
Keywords
MR elastomer(MRE); base isolation system; seismic load; vibration control;
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Times Cited By KSCI : 1  (Citation Analysis)
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