인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
개인구독
소속 기관이 없으신 경우, 개인 정기구독을 하시면 저렴하게
논문을 무제한 열람 이용할 수 있어요.
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.8
- 수록면
- 197 - 204 (8page)
이용수
초록· 키워드
The diverse vibration control systems have been applied to many structures for the enhancement of the earthquake or wind resistant performance. Since such a heavy damped structure has nonclassical damping natures, it is faced some difficulties in extracting modal response in the monochromatic form and in estimating the modal properties precisely with conventional mode decomposition method developed in physical coordinate. In this study, a state-space based modal decomposition technique is proposed to extract modal response from measured response of a heavy damped structure, and to identify the modal properties using the decomposed modal response in the state space. It is analyzed the characteristics of power spectrum of the decomposed modal response, and then a process to identify the modal properties, particularly the damping ratio is addressed. For the verification of the proposed method, the technique is applied to the 3DOF system with the oil dampers and the structure with a tuned mass damper system. From the simulation results, it is found that the transfer function of the modal response in the state space is composed of a combination the displacement and velocity transfer function, and so more precise modal parameter estimation can be expected when the participation ratio of two components is appropriately addressed.
#제진시스템
#고감쇠 구조물
#비고전 감쇠
#상태공간 모드분해
#모달특성추정
#Vibration control system
#Heavy damped structure
#Non-classical damping
#State space based mode decomposition
#Modal parameter estimation
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목차
- Abstract
- 1. 서론
- 2. 상태공간 모드분해법
- 3. 감쇠비 추정
- 4. 수치 시뮬레이션
- 5. 결론
- REFERENCES