论文信息 - A note on the line spring solution for a part-through crack

A note on the line spring solution for a part-through crack

The line spring solutions used to solve part-through crack problems in plates are investigated by comparing with the results obtained from an accurate three-dimensional analysis using the body force method. Comparisons are made for the mode I stress intensity of a semi-elliptical crack with various aspect ratios a/b, i.e. the ratio of the width to the depth of the crack. The results indicate that the two methods agree well for cracks that are wider than they are deep (an aspect ratio greater than one).

[1] D. Parks,et al. The Inelastic Line-Spring: Estimates of Elastic-Plastic Fracture Mechanics Parameters for Surface-Cracked Plates and Shells , 1981 .

[2] L. Keer,et al. Cracking in a loaded, brittle elastic half-space , 1992 .

[3] F. Erdogan,et al. Surface crack in a plate under antisymmetric loading conditions , 1991 .

[4] R. Cordes,et al. Crack surface contact of surface and internal cracks in a plate with residual stresses , 1994 .

[5] J. Rice,et al. The Part-Through Surface Crack in an Elastic Plate , 1972 .

[6] F. Erdogan,et al. Surface crack problems in plates , 1989 .

[7] L. Keer,et al. Three-Dimensional Analysis of Cracking in a Multilayered Composite , 1995 .

[8] Feridun Delale,et al. Line-spring model for surface cracks in a reissner plate , 1981 .

[9] L. Keer,et al. Stress intensity factors for cracks of arbitrary shape near an interfacial boundary , 1987 .