Comparison of Modal Identification of output-only systems with simultaneous and non simultaneous monitoring
Full-scale dynamic tests were conducted on the 5 story steel frame located at Disaster Prevent Research Institute,Kyoto University.In order to determine the dynamics characteristics of the frame,ambient vibration tests were conducted.All 5 floors and ground were monitored,with and without simultaneously.The employed system identification procedures are based on output-only measurements since the forcing functions are not available during ambient vibration tests.The modal identification method used in this study is based on Spectral Analysis.The results are compared with FEM and with the previous results obtained under harmonic forced vibration applied on the frame through mass exciter.The system identification obtained under ambient vibration tests are in very good agreement with forced vibration and analytical results,thus providing a reliable set of identified modal properties that can be used as baseline in future health monitoring and damage detection studies.
system identification spectral analysis ambient vibration structural health monitoring
T. Kuroiwa H. Iemura
Structural Dynamics Laboratory,Kyoto University,Kyoto,Japan
国际会议
The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)
重庆·南京
英文
2007-05-01（万方平台首次上网日期，不代表论文的发表时间）