SOLUTION OF STRESS INTENSITY FACTORS BY WEIGHT FUNCTION FOR SMALL CORNER CRACKS IN PLATES
小角裂纹应力强度因子的权函数解

The three-dimensional weight function method developed in 2,3] is usedto determine stress intensity factors for small corner cracks in plates subjected to remote tension and bending. The geometry parameters considered are c/b=0.1;a/c = 0.2,0.4,0.6, l,2;a/t = 0.01,0.05,0.1 and 0.2, which cover the range of small surface crack problems commonly encountered in fatigue and fracture studies and applications. The results are compared with the finite element solutions in 1] . Very good agreement is observed. The results presented in this paper should be useful in damage tolerance and durability analysis of aircraft structures and in the study of small fatigue cracks.