Buckling Characteristics of a Plate with an Oblique Crack under Tensile Loading : Elastic-Plastic Analysis and Experimental Verification

A cracked plate under tension could manifest a local buckling along the crack due to a compressive stress field in the crack’s vicinity. Crack length and location, loading condition, as well as aspect ratio, thickness, and overall dimensions of the plate are among the contributing parameters to the local buckling characteristics. In this study, the buckling characteristics of a cracked plate on whick the crack’s orientation is not perpendicular to the tensile loading were xs examined. Elastic-plastic buckling analyses of a plate with an oblique crack were conducted by taking into account the effect of the plasticity of the crack tip regions on the local buckling. The elastic-plastic analysis results were compared with experimental results as well as with an elastic buckling analysis. This study reveals that the oblique angle of the crack contributes significantly to the characteristics of the buckling behavior.