Intensity of Singular Stress at the End of a Fiber under Pull-Out Force
Intensity of Singular Stress at the End of a Fiber under Pull-Out Force
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拉力作用下纤维末端的奇异应力强度
DOI：
10.4028/www.scientific.net/kem.353-358.3100
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Junichi Sugimoto
中科院分区：
文献类型：
--
作者：
N. Noda;Y. Takase;R. Shirao;Jun Li;Junichi Sugimoto
在本研究中，本文用半无限体中矩形和圆柱形夹杂模型讨论了纤维端部的奇异应力场，用体积力法将这些问题表示为奇异积分方程组，未知函数是分布在半无限体中的体积力的密度。然后系统地计算了矩形夹杂和圆柱形夹杂角部的广义应力强度因子随夹杂的弹性比、夹杂长度、夹杂厚度和夹杂厚度的变化，以及从主体的边缘到内部的位置的间距。讨论了弹性模量比和夹杂长径比对应力强度因子的影响。
In this study, singular stress fields at the ends of fibers are discussed by the use of models of rectangular and cylindrical inclusions in a semi-infinite body under pull-out force．The body force method is used to formulate those problems as a system of singular integral equations where the unknown functions are densities of the body forces distributed in a semi-infinite body having the same elastic constants as those of the matrix and inclusions.Then generalized stress intensity factors at the corner of rectangular and cylindrical inclusions are systematically calculated with varying the elastic ratio, length, and spacing of the location from edge to inner of the body. The effects of elastic modulus ratio and aspect ratio of inclusion upon the stress intensity factors are discussed.