The model updating experiment of space truss using global and local dynamic information
Jilin HOU1 Jinping OU1, 2 Łukasz Jankowski3
1 School of Civil Engineering, Dalian University of Technology, Dalian, 116024, P. R. of China; 2 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, P. R. of China;3 Smart-Tech Centre, Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106, Warsaw, Poland
Abstract：For large structures in civil engineering, due to their complexity, the limitation of the sensors and insensitivity to the local damage, the model updating is hard to be performed accurately. Aiming overcoming the above problems, in the model updating of a space truss structure, it performs the global and local dynamic tests , and both the measured global and local dynamic information are combined and used for the truss model updating. First the global test is made to obtain the low order modes which reflect the global information of the structure; then certain mass is added on the truss element to increase the local dynamic characteristic of truss element and to make the element have local primary frequency, which is mainly determined by the element stiffness; finally, all the experiment data, including low mode and local primary frequencies, are combined and used for modal updating. The effectiveness and accuracy of the proposed method is verified by the experiment.
侯吉林;欧进萍;;&#;ukasz Jankowski. 联合整体和局部动态信息的空间桁架模型修正试验[J]. , 2013, 32(16): 100-105.
Jilin HOU Jinping OU; &#;ukasz Jankowski. The model updating experiment of space truss using global and local dynamic information. , 2013, 32(16): 100-105.
2013, Vol. 32 
