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arXiv 2510.20573math.AP
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薄弹性板的均匀化、降维与线性化

Homogenization, dimension reduction and linearization of thin elastic plate

Amartya Chakrabortty, Georges Griso, Julia Orlik

AI总结:

本文研究复合薄板在外部载荷下的均匀化、降维与线性化,证明不同极限顺序下极限能量不变,并用Γ-收敛证明极限问题解的唯一性,推广至穿孔板。

摘要:

本文在非线性弹性问题的框架下,研究了承受外部载荷的复合板的均匀化、降维与线性化。问题的总弹性能量阶为 $\sim h^2\varepsilon^{2a+3}$,其中 $a\geq1$。本文分为两部分:第一部分在不对 $\varepsilon$ 和 $h$ 做任何耦合假设的情况下,给出了复合板的同时均匀化、降维与线性化($(\varepsilon,h)\to(0,0)$)。第二部分包括在小变形和外部载荷条件下,将线性化弹性作为非线性弹性的极限进行严格推导。所得结果表明,当先进行线性化($h\to 0$),随后进行同时均匀化与降维($\varepsilon\to0$),以及当两个极限同时趋近于零,即 $(\varepsilon,h)\to (0,0)$ 时,极限能量保持不变。通过板变形和板位移的分解,得到了极限能量的精确形式。利用 $\Gamma$-收敛技术,证明了极限线性化均匀化能量问题存在唯一解。这些结果随后被推广到某些周期性穿孔板。

英文摘要:

This paper investigates the homogenization, dimension reduction, and linearization of a composite plate subjected to external loading within the framework of non-linear elasticity problem. The total elastic energy of the problem is of order $\sim h^2\varepsilon^{2a+3}$, where $a\geq1$. The paper is divided into two parts: The first part presents the simultaneous homogenization, dimension reduction and linearization ($(\varepsilon,h)\to(0,0)$) of a composite plate without any coupling assumption of $\varepsilon$ and $h$. The second part consists of the rigorous derivation of linearized elasticity as a limit of non-linear elasticity with small deformation and external loading conditions. The results obtained demonstrate that the limit energy remains unchanged when the first linearization ($h\to 0$) is performed, followed by simultaneous homogenization dimension reduction ($\varepsilon\to0$) and when both limits approach zero simultaneously, i.e. $(\varepsilon,h)\to (0,0)$. The exact form of the limit energy(s) is obtained through the decomposition of plate deformations and plate displacements. By using the $Γ$-convergence technique, the existence of a unique solution for the limit linearized homogenized energy problem is demonstrated. These results are then extended to certain periodic perforated plates.

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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