摘要
以紧凑拉伸试样静应力分析及疲劳裂纹寿命为研究对象,通过三维建模软件建立紧凑拉伸试样,运用有限元分析软件对试样进行静力学分析,得到其最大变形及最大应力,并对紧凑拉伸试样预制裂纹,运用疲劳子软件进行裂纹扩展分析,得到其循环作用次数以及a-N曲线。此方法可用于疲劳裂纹扩展寿命的计算,并且让裂纹扩展的过程可视化,方便分析和掌握疲劳机理。
Based on the compact tensile samples static stress analysis and fatigue life of crack as research object, through 3 d modeling software to establish compact tensile sample, the maximum deformation and stress are obtained by static analysis of sample by finite element analysis software. Cracks are prefabricated for the compact tensile sample, and fatigue sub-software is used for crack propagation analysis, and cyclic action times and a-N curve are obtained. The method can be used for calculation of fatigue life of crack spread, and visualize the process of crack propagation, convenient profound grasp and analysis of fatigue mechanism.
作者
刘阳
王忠政
Liu Yang;Wang Zhongzheng(Mechanical Engineering College,Xi’an Shiyou University,Xi’an 710065,China)
出处
《金属制品》
CAS
2022年第1期13-16,共4页
Metal Products
关键词
有限元分析
紧凑拉伸试样
疲劳裂纹扩展
寿命计算
应力强度因子
finite element analysis
compact tensile sample
fatigue crack growth
life calculation
stress intensity factor
