基于特征正交分解的梁结构损伤识别

摘要

介绍了特征正交分解,Proper,Orthogonal,Decomposition,POD,的相关理论和一种基于特征正交分解的结构损伤识别方法的基本原理,并利用该识别方法对简支梁结构进行了损伤识别数值研究.研究结果发现:基于特征正交分解的结构损伤识别方法对简支梁结构进行了损伤识别数值研究.研究结果发现:基于特征正交分解的结构损伤识别方法能较好地识别出梁结构的损伤位置,并具有一定的抗噪能力.%The correlation theories based on proper orthogonal decomposition (POD) and the basic principle of a structural damage detection method applying POD were introduced. Numerical study on beam structures for damage identification using the proposed method was conducted. From the study results one can find that the method based on POD has the ability to identify the damage location of beam structures and the noise immunity to a certain degree.