摘要
利用截面抗弯刚度的降低来模拟这种裂缝损伤,并以简支梁为研究对象,分别针对单位置及其多位置损伤,利用有限元分析软件计算得到简支梁的位移模态,再通过应变和位移之间具有二阶导数的关系,对简支梁进行了应变模态分析。
In this paper, the crack is modeled by the degradation of bending stiffness and the crack damage is detected with strain mode method. Strain modal analysis was adamagediagnosis method which is sensitive to damage location and damage degree. As an example, the displacement mode of a simply supported beam is calculated using finite element software with powerful functions, and then strain modal analysis of the simply supported beam for single-position damage and multi-position damage respectively is carried through the one-order differential relationship between strain and displacement.
出处
《低温建筑技术》
2005年第4期100-101,共2页
Low Temperature Architecture Technology
关键词
低温
脆性裂缝
位移模态
应变模态
low temperature
brittle crack
displacement mode
strain mode
