Statistical detection of structural damage based on model reduction

排行榜 收藏 打印 发给朋友 举报 来源: 《Applied Mathematics and Mechanics》 发布者:cjk3d
热度3票 浏览12次 【共0条评论】【我要评论 时间:2009年12月16日 14:08
Statistical detection of structural damage based on model reduction

This paper proposes a statistical method for damage detection based on the finite element (FE) model reduction technique that utilizes measured modal data with a limited number of sensors.A deterministic damage detection process is formulated based on the model reduction technique.The probabilistic process is integrated into the deterministic damage detection process using a perturbation technique,resulting in a statistical structural damage detection method.This is achieved by deriving the firstand second-order partial derivatives of uncertain parameters,such as elasticity of the damaged member,with respect to the measurement noise,which allows expectation and covariance matrix of the uncertain parameters to be calculated.Besides the theoretical development,this paper reports numerical verification of the proposed method using a portal frame example and Monte Carlo simulation.水利论文D)F{*DG,G8d.S:e

作 者: Tao YIN Heung-fai LAM Hong-ping ZHU  
作者单位:Tao YIN,Heung-fai LAM(Department of Building and Construction;City University of Hong Kong,Hong Kong,P.R.China)水利论文2hHrlGFD
Hong-ping ZHU(School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074,P.R.China) 
刊 名:应用数学和力学(英文版)  EI SCI
英文刊名:APPLIED MATHEMATICS AND MECHANICS 
年,卷(期):2009 30(7) 
分类号:O327 
关键词:damage detection   model reduction   perturbation technique   Monte Carlo simulation  
机标关键词:model reductionbasedstructural damagedamage detectionuncertain parametersperturbation techniquenumerical verificationpartial derivativescovariance matrixfinite elementMonte Carlodevelopmentpaperintegratedlimitedportalframedata 
基金项目:the Strategic Research Grant of City University of Hong Kong 
下一篇:Gas-kinetic numerical schemes for one- and two-dimensional inner flows
上一篇:Blow-up rate and profile for a class of quasilinear parabolic system
查看全部回复【已有0位网友发表了看法】

广告投放

广告投放