Optimal Sensor Placement Based On Damage Sensitivity of Modal Parameters
In this paper through to analyse the sensitivity of several modal parameters about the elastic modulus damage such as characteristic frequency, modal displacement, flexibility matrix and modal curvature, Combined with Fisher information matrix, got the sensitivity of modal parameters on different damage positions of bridge. Computational simulation of Jian Tiao bridge is implemented with this method to find Optimum sensor placement schemes of different parameters. And through the result of numerical analysis we know, flexibility matrix is the most sensitive parameter about damage of elastic modulus, modal sensitivity less than flexibility matrix, the third is frequency. Sensitivity of modal curvature is the dullest, its sensitivity only 1/300 than flexibility matrix. It have different sensor arrange schemes when use four different modal parameters, among them the sensitivity of flexibility matrix is highest.
Modal parameters Sensitivity Elastic modulus Fisher information matrix Optimum arrangement
Xin Jun Zhang Fan Li Wei Peng
Zhejiang University of Technology, Zhejiang Hangzhou, china Zhejiang University of Technology, Zhejiang Hangzhou, china Ningbo Institute of Technology, Zhejiang Ningbo Institute of Technology, Zhejiang University, Zhejiang Ningbo, china
国际会议
上海
英文
647-651
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）