인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
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.
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.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.