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arXiv 2109.05046math.AP
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核壳结构$C^{1,α}$夹杂应力集中的奇异性

Singularities of the stress concentration in the presence of $C^{1,α}$-inclusions with core-shell geometry

Zhiwen Zhao, Xia Hao

摘要:

在高对比度复合材料中,如果夹杂物非常接近基体边界,则由线性弹性拉梅系统解的梯度表示的应力可能会相对于它们之间的距离$\varepsilon$表现出奇异性。本文通过精确地捕捉所有的爆破因子矩阵,建立了具有$C^{1,α}$边界的核壳几何结构在所有维度上的应力集中的渐近公式,当核壳界面边界与周围壳的距离$\varepsilon$趋于零时.此外,直接应用这些爆破因子矩阵给出了最佳梯度估计。

英文摘要:

In high-contrast composites, if an inclusion is in close proximity to the matrix boundary, then the stress, which is represented by the gradient of a solution to the Lamé systems of linear elasticity, may exhibits the singularities with respect to the distance $\varepsilon$ between them. In this paper, we establish the asymptotic formulas of the stress concentration for core-shell geometry with $C^{1,α}$ boundaries in all dimensions by precisely capturing all the blow-up factor matrices, as the distance $\varepsilon$ between interfacial boundaries of a core and a surrounding shell goes to zero. Further, a direct application of these blow-up factor matrices gives the optimal gradient estimates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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