基于J2-积分与六棱柱壳裂纹应力强度因子

摘要

应力强度因子作为一个重要的断裂参量,在工程结构件断裂分析过程中起到至关重要的作用.本文基于J2-积分和材料力学中的弯曲理论,对六棱柱壳横向裂纹和加强筋六棱柱壳横向裂纹的应力强度因子进行了分析求解.给出了利用J2-积分求解复杂结构应力强度因子的一个方法.%As one of the important fracture parameters, stress intensity factor plays an important role in the fracture analysis of engineering structures.Based on the concept of J2-integral and the elementary theory of strength of materials,the stress intensity factors of the transverse crack of the six prismatic shell and the six prismatic shell with reinforcing rib are analyzed and solved.A method for solving the stress intensity factor of complex structure by using J2-integral method is presented.