摘要
基于断裂力学和裂纹技术的现有成果 ,确定了基体裂纹的定义 ,分析了基体裂纹问题的应力场、位移场 ,获得了基体裂纹应力场和位移场的表达式。对不同材料形成的基体裂纹在拉伸和三点弯曲状态下的几何因子进行了计算 ,理论分析和计算证实了基体裂纹作为人为切口的可行性。
On the basis of the existing achievement of fracture mechanics and crack technology,the paper analyses the stress field and displacement field of matrix crack question under specific situation, obtaines the formula of stress field of matrix crack.In the meantime, the paper calculates the stress intensity factor of matrix crack that formed by different material under the 3PBS and extension state.As a result,theory analysis and calculation verify feasibility of matrix crack as artificial notch.
出处
《煤矿机械》
北大核心
2005年第1期19-21,共3页
Coal Mine Machinery
