Evaluation of J-Integral for Surface Cracked Plates Under Biaxial Tensile/Bending Loading Using Extended Reference Stress Method

摘要

In this paper, reference stress solutions for plates with semi-elliptical surface cracks were reviewed, and the applicability of the solutions was examined through the comparison with finite element analysis results under uniaxial loading. Next, an extended reference stress method was newly developed to evaluate J-integral for cracked plates under biaxial tensile and/or bending loading. The accuracy of the method was validated through the comparison with finite element analysis results under biaxial loading.