摘要
阐述了梁结构裂纹位置识别的模态能量法 ,利用结构固有频率的改变对悬臂梁裂纹位置进行了识别 ,将有限元分析获得的模态应变能分布曲线与不同裂纹位置引起的固有频率改变曲线及应变模态振型进行了对比分析 。
A modal energy method to identify crack location in a beam is reported. In the method the structural natural frequencies are used to detect the crack position. The modal strain energy obtained from FEM versus the elements is compared with the strain modes and the eigenfrequency variations with the crack positions. The influence of different element discretization and different modes to the crack detection is discussed.
出处
《武汉理工大学学报（交通科学与工程版）》
北大核心
2001年第3期241-243,共3页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金资助项目 (批准号 :1 9772 0 3 8)
