Stress intensity factors for corner cracks in single-edge notch bend specimen by a three-dimensional weight function method

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• 作者：X. C. Zhao ; X. R. Wu ; J. C. Newman Jr. and D. H. Tong
• 刊名：Fatigue & Fracture of Engineering Materials & Structures
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：40
• 期：2
• 页码：277-287
• 全文大小：1234K
• ISSN：1460-2695

文摘

A three-dimensional (3D) weight function method is employed to calculate stress intensity factors of quarter-elliptical corner cracks at a semi-circular notch in the newly developed single-edge notch bend specimen. Corner cracks covering a wide range of geometrical parameters under pin-loading and remote tension conditions are analysed. Stress intensity factors from the 3D weight function analysis agree well with ABAQUS-Franc3D finite element results. An engineering similitude approach previously developed for the half-elliptical surface crack in single-edge notch bend specimen is also applied to the present corner crack configuration. The results compare well with those from the present weight function analysis.