文献类型：期刊文献

英文题名：Research on Beam Structure Damage Identification Method Based on Time Domain Response Sensitivity Analysis

作者：Lin, Lizong[1]; Chang, Haoyuan[1]; Zhang, Xin[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2019

卷号：1213

期号：5

外文期刊名：Journal of Physics: Conference Series

收录：EI(收录号：20193107263971)

语种：英文

外文关键词：Time domain analysis - Elastic moduli - MATLAB - Damage detection - Numerical methods - Concrete beams and girders - Sensitivity analysis

摘要：A method for damage identification of beam based on time domain response sensitivity is proposed. The damage of the beam is regarded as the reduction of Young's modulus, and the damage of the beam structure is detected by comparing the difference in displacement response between the undamaged-beam and damaged-beam. At the same time, the derivation and establishment of sensitivity matrix and the solution of sensitivity equation were introduced in detail, and the accuracy of the method was verified by software such as ABAQUS and MATLAB. Numerical analysis shows that the sensitivity analysis method has the advantages of simple operation, less measuring points and high precision. Quantitative measurements can be achieved for single damage conditions. Meanwhile, positioning measurements can be achieved for multiple loss conditions. ? 2019 Published under licence by IOP Publishing Ltd.