Structural system identification by utilizing transmissibility coherence from limited measured data

作     者：Yun-Lai Zhou Cao Hongyou Ni Zhen Li Zhang Magd Abdel Wahab 

作者机构：Department of Civil and Environmental Engineering National University of Singapore 2 Engineering Drive 2 Singapore 117576 School of civil engineering and architecture Wuhan University of Technology Wuhan 430070 China Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters College of physical Science and Technology Yili Normal University 835000 China Soete Laboratory Faculty of Engineering and Architecture Ghent University Technologiepark Zwijnaarde 903 B-9052 Zwijnaarde Belgium 

出 版 物：《Journal of Physics: Conference Series》 

年 卷 期：2017年第842卷第1期

学科分类：07[理学] 0702[理学-物理学] 

摘      要：System identification performs as a core issue in structural dynamic analysis. In this study, transmissibility coherence is introduced for system identification with recalling the existing techniques based on transmissibility. Unlike previous approaches that require four-point measurement, the proposed methodology in this study only requires two-point measurement. The merit behind this approach is that the transmissibility coherence can be employed to estimate the subtraction of transmissibility between two reference points, by using auto- and cross-spectrum analysis. Verification using experimental data proves the feasibility of the proposed technique.