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首页> 外文期刊>International Journal of Solids and Structures >Effect of non-planar cracks with islands of contact on the elastic properties of materials
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Effect of non-planar cracks with islands of contact on the elastic properties of materials

机译：非平面裂缝与接触岛对材料弹性性能的影响

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The contribution of a spherical cap crack having an "island" of contact between its faces into elastic compliance of a material is analyzed. Vector of the displacement discontinuity at the crack faces in response to remotely applied stress is calculated using the mesh free technique based on the solution approximation by Gaussian functions. The result is used to construct the compliance contribution tensor of this crack as a function of the island position and extent of non-flatness of the crack. This tensor is orthotropic and the two mentioned factors produce complex combined effect. To study these effects, simple analytical approximation for the obtained numerical result is proposed. The effect of position of the contact is substantial even for planar cracks and it becomes much stronger for non-planar ones; the effect of the size of the contact is generally similar to that for planar cracks. Moderately non-planar cracks may be approximated by planar ones with acceptable accuracy. (C) 2020 ElsevierLtd. Allrightsreserved.
机译：分析了具有“岛”的球形盖裂缝的贡献，其面向弹性顺应材料的弹性顺应性。使用基于高斯函数的溶液近似来计算响应远程施加应力的裂缝面的位移不连续的矢量。结果用于根据裂缝的非平坦度的函数和范围构建该裂缝的顺应性贡献张量。这种张量是正向偶像，两种因素产生复杂的组合效果。为研究这些效果，提出了所获得的数值结果的简单分析近似。即使对于平面裂缝，接触位置的效果也很大，对于非平面裂缝变得更强大;接触尺寸的效果通常与平面裂缝相似。适度的非平面裂缝可以通过平面的裂缝近似，具有可接受的精度。 （c）2020 elsevierltd。版权所有。

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