基于振型差值曲率和广义柔度矩阵的两阶段损伤识别方法研究  

Research on Two-Stage Damage Identification Method Based on Mode Shape Difference Curvature and Generalized Flexibility Matrix

作　　者：邵志饶 SHAO Zhirao(Suzhou University of Science and Technology)

机构地区：[1]苏州科技大学

出　　处：《广东建材》2025年第3期89-92,共4页Guangdong Building Materials

摘　　要：本文从理论角度出发,首先对基于振型差值曲率进行损伤判断的原理进行了分析。在此基础上,进行第二阶段的研究,即基于广义柔度矩阵法进行结构的损伤定位。最后采用一悬臂梁模型作为研究对象,通过数值仿真获取了悬臂梁的振型模态,并编写了相应的计算程序来计算振型差值曲率和广义柔度矩阵。研究结果表明,基于振型差值曲率和广义柔度矩阵的两阶段损伤识别方法在损伤判断和定位方面表现出良好的性能。In this paper,from the theoretical point of view,the principle of damage determination based on differential curvature of vibration patterns is firstly analyzed.On this basis,the second phase of the study is carried out,i.e.,damage localization of the structure based on the generalized flexibility matrix method.Finally,a cantilever beam model is adopted as the research object,and the vibration modes of the cantilever beam are obtained through numerical simulation,and the corresponding calculation program is written to calculate the vibration mode differential curvature and the generalized flexibility matrix.The results show that the two-stage damage identification method based on the differential curvature of the vibration mode and the generalized flexibility matrix shows good performance in damage determination and localization.

关 键 词：损伤识别 广义柔度 振型差值曲率 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]