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运用弹塑性和断裂力学理论对圆孔和槽孔断裂机理作了全面分析， 对槽孔间及边孔与自由边界断裂面上主应力场的分布特征进行了分析、描述和计算， 建立了断裂判据， 得出了槽孔断裂的临界参数。
Based on the theory of elasto-plasticity and fracture mechanics, the fracture mechanism of circular hole and slot is comprehensively analyzed. The distribution of the principal stress field on the fracture surface between slot and edge and free boundary is analyzed, described and calculated, and the fracture Criterion, obtained the critical parameters of slot fracture.