机械科学与技术2018，Vol.37Issue(1)：8-12,5.DOI:10.13433/j.cnki.1003-8728.2018.0102
框架结构非线性损伤的主成分分析识别方法研究
Study on Nonlinear Damage Identification of Frame Structure with a Principal Component Analysis Method
摘要
Abstract
On the problem of nonlinear damage identification of frame structures,a damage identification method based on the principal component analysis is put forward.The data compression and feature extraction characteristics in the principal component analysis is used to identify the nonlinear damage.Firstly,the data of health state of the structure is processed to extract the characteristic components,secondly the principal component model is established and the unknown states' experimental data is projected upon principal component model,finally the nonlinear damage is identified by constructing several damage indexes.In this paper,a four-storey frame collision model is used as the experimental subject and the nonlinear damage source is constructed by a bolt and steel column,at last the experimental result shows that the structural damage can be effectively identified.关键词
非线性损伤/损伤识别/主成分分析/损伤指标Key words
nonlinear damage/damage identification/principal component analysis/damage index分类
建筑与水利引用本文复制引用
赵仕通,肖黎,屈文忠..框架结构非线性损伤的主成分分析识别方法研究[J].机械科学与技术,2018,37(1):8-12,5.基金项目
国家自然科学基金项目(51378402)资助 （51378402）
