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It is interesting to study the stress concentration between two adjacent stiff inclusions in composite materials, which can be modeled by the Lam\'e system with partially infinite coefficients. To overcome the difficulty from the lack of…

Analysis of PDEs · Mathematics 2018-02-06 Yuanyuan Hou , Hongjie Ju , Haigang Li

In high-contrast elastic composites, it is vitally important to investigate the stress concentration from an engineering point of view. The purpose of this paper is to show that the blowup rate of the stress depends not only on the shape of…

Analysis of PDEs · Mathematics 2019-12-17 Haigang Li , Zhiwen Zhao

In the region between two closely located stiff inclusions, the stress, which is the gradient of a solution to the Lam\'{e} system with partially infinite coefficients, may become arbitrarily large as the distance between interfacial…

Analysis of PDEs · Mathematics 2021-09-15 Zhiwen Zhao , Xia Hao

In composite material, the stress may be arbitrarily large in the narrow region between two close-to-touching hard inclusions. The stress is represented by the gradient of a solution to the Lam\'{e} system of linear elasticity. The aim of…

Analysis of PDEs · Mathematics 2018-11-09 Haigang Li

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 Lam\'{e} systems of linear elasticity, may exhibits the singularities with…

Analysis of PDEs · Mathematics 2021-09-14 Zhiwen Zhao , Xia Hao

In the region between close-to-touching hard inclusions, the stress may be arbitrarily large as the inclusions get closer. The stress is represented by the gradient of a solution to the Lam\'e system of linear elasticity. We consider the…

Analysis of PDEs · Mathematics 2018-10-17 Hyeonbae Kang , Sanghyeon Yu

In high-contrast composite materials, the electric field concentration is a common phenomenon when two inclusions are close to touch. It is important from an engineering point of view to study the dependence of the electric field on the…

Analysis of PDEs · Mathematics 2019-12-12 Yu Chen , Haigang Li , Longjuan Xu

A long-standing area of materials science research has been the study of electrostatic, magnetic, and elastic fields in composite with densely packed inclusions whose material properties differ from that of the background. For a general…

Analysis of PDEs · Mathematics 2020-10-28 Haigang Li , Longjuan Xu

This paper is devoted to establishing the pointwise upper and lower bounds estimates of the gradient of the solutions to a class of general elliptic systems with H\"{o}lder continuous coefficients in a narrow region where the upper and…

Analysis of PDEs · Mathematics 2022-03-30 Yan Li

In this paper, we establish the asymptotic expressions for the gradient of a solution to the Lam\'{e} systems with partially infinity coefficients as two rigid $C^{1,\gamma}$-inclusions are very close but not touching. The novelty of these…

Analysis of PDEs · Mathematics 2021-09-14 Xia Hao , Zhiwen Zhao

For two neighbouring stiff inclusions, the stress, which is the gradient of a solution to the Lam\'{e} system of linear elasticity, may exhibit singular behavior as the distance between these two inclusions becomes arbitrarily small. In…

Analysis of PDEs · Mathematics 2022-05-06 Changxing Miao , Zhiwen Zhao

We investigate higher derivative estimates for the Lam\'e system with hard inclusions embedded in a bounded domain in $\mathbb{R}^{d}$. As the distance $\varepsilon$ between two closely spaced hard inclusions approaches zero, the stress in…

Analysis of PDEs · Mathematics 2024-11-26 Hongjie Dong , Haigang Li , Huaijun Teng , Peihao Zhang

We consider the Lam\'{e} system arising from high-contrast composite materials whose inclusions (fibers) are nearly touching the matrix boundary. The stress, which is the gradient of the solution, always concentrates highly in the narrow…

Analysis of PDEs · Mathematics 2022-05-06 Changxing Miao , Zhiwen Zhao

We study the stress concentration, which is the gradient of the solution, when two smooth inclusions are closely located in a possibly anisotropic medium. The governing equation may be degenerate of $p-$Laplace type, with $1<p \leq N$. We…

Analysis of PDEs · Mathematics 2018-09-25 Giulio Ciraolo , Angela Sciammetta

We are concerned with the field concentration between two nearly-touching inclusions with high-contrast material parameters, which is a central topic in the theory of composite materials. The degree of concentration is characterised by the…

Analysis of PDEs · Mathematics 2022-11-17 Youjun Deng , Yueguang Hu , Hongyu Liu , Wanjing Tang

If stiff inclusions are closely located, then the stress, which is the gradient of the solution, may become arbitrarily large as the distance between two inclusions tends to zero. In this paper we investigate the asymptotic behavior of the…

Analysis of PDEs · Mathematics 2013-12-03 Hyeonbae Kang , Hyundae Lee , KiHyun Yun

When two stiff inclusions are closely located, the gradient of the solution to the Lam\'{e} system, in other words the stress, may become arbitrarily large as the distance between two inclusions tends to zero. To compute the gradient of the…

Numerical Analysis · Mathematics 2024-07-10 Xiaofei Li , Shengqi Lin , Haojie Wang

A high-contrast two-phase nonlinear composite material with adjacent inclusions of $m$-convex shapes is considered for $m>2$. The mathematical formulation consists of the insulated conductivity problem with $p$-Laplace operator in…

Analysis of PDEs · Mathematics 2023-06-14 Qionglei Chen , Zhiwen Zhao

In this paper, we are concerned with the gradient estimate of the electric field due to two nearly touching dielectric inclusions, which is a central topic in the theory of composite materials. We derive accurate quantitative…

Analysis of PDEs · Mathematics 2021-07-30 Youjun Deng , Xiaoping Fang , Hongyu Liu

Photoelasticity is employed to investigate the stress state near stiff rectangular and rhombohedral inclusions embedded in a 'soft' elastic plate. Results show that the singular stress field predicted by the linear elastic solution for the…

Soft Condensed Matter · Physics 2014-04-04 Diego Misseroni , Francesco Dal Corso , Summer Shahzad , Davide Bigoni
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