【摘要】 利用裂纹非自发扩展的能量释放率,即G*-积分理论分析求解了拉伸周期裂纹管应力强度因子问题,给出了周期裂纹管应力强度因子的系列解答。该解亦可作为开裂曲板应力强度因子的近似解。更多还原

【Abstract】 Based on the energy release rate of “non-spontaneous” crack extension, i.e., G*-integral theory, a very simple method is proposed to estimate stress intensity factors for circumferential periodic cracked pipes and shells under tension. A series of closed form expressions of stress intensity factors are derived, which can also be modified and applied to cylindrical panels. The numerical results given in the paper agree well with the ones by Tada.更多还原