SENSITIVITY ANALYSIS OF DAMAGE IDENTIFICATION OF RANDOM BEAM STRUCTURES TO STATIC LOAD POSITION
This paper aims to study the influence of static load position on damage identification of random beam structures.In the process of damage identification,model errors and measurement noises are taken into account.In order to implement the identification of random beam structures,control equations with respect to random damage index are established combining with static condensation method.Using high order of perturbation technique,the solution of the control equations are determined by recursive stochastic FEM (RSFEM) so that the probability of structural damage can be obtained in accordance with the given definition of structural damage probability.On the basis of these,it is evaluated how the variation of load position affects the identification of damage location and damage degree of random beam structures.The concept of sensitive factor of load position to structural damage is introduced for dealing with the sensitivity analysis.In numerical example of random beam structure,the means of damage index and damage probabilities are utilized to find out the sensitive positions of static loads to structural damages.In the end,the effectiveness of the suggested method is discussed and several significant conclusions are achieved in the paper.
Random beam structure sensitivity analysis static load position damage identification recursive stochastic FEM
Bin Huang Furong Zhu Ruifang Zong Roohollah Fallahi Seresh
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, P.R.Chin Central and Southe(rn)China Municipal Engineering Design & Research institute, Xiamen 361006, P.R.Ch
国际会议
The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)
武汉
英文
1525-1529
2012-11-17（万方平台首次上网日期，不代表论文的发表时间）