基于有限元结构损伤程度研究  

Research on the Structure Damage Degree Based on the Finite Element

作　　者：张志斌[1] 徐敏 叶伟强[1] 

机构地区：[1]广州航海学院船舶工程系,广东广州510725 [2]广船国际,广东广州510380

出　　处：《广州航海学院学报》2015年第3期22-25,共4页Journal of Guangzhou Maritime University

基　　金：广州市科技局项目资助(201355)

摘　　要：为了寻求研究船舶轴类损伤程度的方法,本文基于振有限元理论及模态分析法,推导出结构的频率变化率为结构损伤程度的函数.以一光轴为例,根据ANSYS仿真软件计算出损伤前后的频率变化率,然后再模拟出在任意一个位置的五个不同深度的裂纹,从而对裂纹深度进行识别.To know the damage of ship＇s axis, the author has done plenty of work. It is a truth that the frequency change rate is closely related to the structure damage degree. In an optical axis, for example, the frequency change rate can be calculated on the basis of ANSYS simulation software, and five cracks in different depth in the same position are simulated. From what have been illustrated above, we can have a clear finding that the cracks depth would be detected by the method.

关 键 词：有限元 模态分析 损伤识别 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]