A Semi-Analytical Solution for the Stress Field and Stress Intensity Factor of Hole-Edge Cracks Using Improved Muskhelishvili Method

IF 2.9 3区 工程技术 Q2 MECHANICS
Haibiao Gao, Yixiao Qin, Linhao Wang
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引用次数: 0

Abstract

A semi-analytical solution is provided to obtain the stress intensity factors (SIFs) of hole-edge cracks with different configurations and the stress fields along the crack propagation direction in an infinite isotropic plane. The complicated solution procedure while using the Muskhelishvili method is improved by expanding an irrational mapping function into an approximate rational function so that singular integral equations could be converted to linear equations. The proposed method used to obtain the SIFs of symmetrical cracks emanating from circular or elliptical holes and a single crack emanating from a circular hole is compared with other methods in the literature. The results show that this method is universal and accurate for hole-edge cracks. In addition, the effects of the lengths of the asymmetrical cracks and the ratio of the semi-axes of the elliptical hole (a/b) on the SIFs are studied, which have not been previously reported.

使用改进的 Muskhelishvili 方法对孔缘裂缝的应力场和应力集中因子进行半解析求解
本文提供了一种半解析解法,用于求得无限各向同性平面中不同构造孔缘裂纹的应力强度因子(SIF)以及沿裂纹扩展方向的应力场。通过将无理映射函数展开为近似有理函数,从而将奇异积分方程转换为线性方程,改进了使用 Muskhelishvili 方法时的复杂求解过程。所提出的用于获得从圆形或椭圆形孔中产生的对称裂缝以及从圆形孔中产生的单一裂缝的 SIF 的方法与文献中的其他方法进行了比较。结果表明,该方法对孔边裂缝具有通用性和准确性。此外,还研究了不对称裂缝的长度和椭圆孔的半轴比(a/b)对 SIF 的影响,这些都是以前未曾报道过的。
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来源期刊
CiteScore
5.80
自引率
11.40%
发文量
116
审稿时长
3 months
期刊介绍: The journal has as its objective the publication and wide electronic dissemination of innovative and consequential research in applied mechanics. IJAM welcomes high-quality original research papers in all aspects of applied mechanics from contributors throughout the world. The journal aims to promote the international exchange of new knowledge and recent development information in all aspects of applied mechanics. In addition to covering the classical branches of applied mechanics, namely solid mechanics, fluid mechanics, thermodynamics, and material science, the journal also encourages contributions from newly emerging areas such as biomechanics, electromechanics, the mechanical behavior of advanced materials, nanomechanics, and many other inter-disciplinary research areas in which the concepts of applied mechanics are extensively applied and developed.
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