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The asymptotic behaviour of solutions of three-dimensional nonlinear elastodynamics in a thin shell is considered, as the thickness $h$ of the shell tends to zero. Given the appropriate scalings of the applied force and of the initial data…

偏微分方程分析 · 数学 2018-04-17 Yizhao Qin , Pengfei Yao

We consider the Cauchy problem for 2-D incompressible isotropic elastodynamics. Standard energy methods yield local solutions on a time interval $[0,{T}/{\epsilon}]$, for initial data of the form $\epsilon U_0$, where $T$ depends only on…

偏微分方程分析 · 数学 2013-01-01 Zhen Lei , Thomas C. Sideris , Yi Zhou

Various aspects of the Cauchy problem for the Einstein equations are surveyed, with the emphasis on local solutions of the evolution equations. Particular attention is payed to giving a clear explanation of conceptual issues which arise in…

广义相对论与量子宇宙学 · 物理学 2011-04-21 H. Friedrich , A. D. Rendall

Degenerate hyperbolic equations are dealing with many important issues for applied nature. While a variety of degenerate equations and boundary conditions, successfully matched to these differential equation, most in the characteristic…

偏微分方程分析 · 数学 2018-01-11 I. N. Rodionova , V. M. Dolgopolov , M. V. Dolgopolov

A class of three-dimensional initial data characterized by uniformly large vorticity is considered for the Euler equations of incompressible fluids. The fast singular oscillating limits of the Euler equations are studied for parametrically…

偏微分方程分析 · 数学 2012-07-27 François Golse , Alex Mahalov , Basil Nicolaenko

The nonlinear mechanics of a flexible elastic rod constrained at its edges by a pair of sliding sleeves is analyzed. The planar equilibrium configurations of this variable-length elastica are found to have shape defined only by the…

软凝聚态物质 · 物理学 2024-09-19 Alessandro Cazzolli , Francesco Dal Corso

The Euler system in fluid dynamics is a model of a compressible inviscid fluid incorporating the three basic physical principles: Conservation of mass, momentum, and energy. We show that the Cauchy problem is basically ill-posed for the…

偏微分方程分析 · 数学 2020-06-03 Eduard Feireisl , Christian Klingenberg , Ondřej Kreml , Simon Markfelder

This paper is devoted to classical variational problems for planar elastic curves of clamped endpoints, so-called Euler's elastica problem. We investigate a straightening limit that means enlarging the distance of the endpoints, and obtain…

经典分析与常微分方程 · 数学 2020-10-15 Tatsuya Miura

The well-posedness of Cauchy problem of 3D compressible Euler equations is studied. By using Smith-Tataru's approach \cite{ST}, we prove the local existence, uniqueness and stability of solutions for Cauchy problem of 3D compressible Euler…

偏微分方程分析 · 数学 2021-08-17 Huali Zhang , Lars Andersson

This paper is concerned with the existence of compactly supported admissible solutions to the Cauchy problem for the isentropic compressible Euler equations. In more than one space dimension, convex integration techniques developed by De…

偏微分方程分析 · 数学 2020-03-31 Ibrokhimbek Akramov , Emil Wiedemann

We present a new hydrodynamic model consisting of the pressureless Euler equations and the isentropic compressible Navier-Stokes equations where the coupling of two systems is through the drag force. This coupled system can be derived, in…

偏微分方程分析 · 数学 2016-04-19 Young-Pil Choi , Bongsuk Kwon

In this short note we present an instability result for transonic flows with respect to perturbations of the Mach number at infinity. More specifically we show that a perturbation of a transonic solution in the context of a Cauchy problem…

偏微分方程分析 · 数学 2021-09-29 Yannis Angelopoulos

We establish the existence of Lipschitz continuous solutions to the Cauchy Dirichlet problem for a class of evolutionary partial differential equations of the form $$ \partial_tu-\text{div}_x \nabla_\xi f(\nabla u)=0 $$ in a space-time…

偏微分方程分析 · 数学 2025-04-25 Verena Bögelein , Frank Duzaar , Giulia Treu

It is fairly well known that rotation in three dimensions can be expressed as a quadratic in a skew symmetric matrix via the Euler-Rodrigues formula. A generalized Euler-Rodrigues polynomial of degree 2n in a skew symmetric generating…

材料科学 · 物理学 2008-07-25 Andrew N. Norris

Whether the 3D incompressible Euler equations can develop a singularity in finite time from smooth initial data is one of the most challenging problems in mathematical fluid dynamics. This work attempts to provide an affirmative answer to…

流体动力学 · 物理学 2015-06-17 Guo Luo , Thomas Y. Hou

The search of finite-time singularity solutions of Euler equations is considered for the case of an incompressible and inviscid fluid. Under the assumption that a finite-time blow-up solution may be spatially anisotropic as time goes by…

流体动力学 · 物理学 2022-01-07 Sergio Rica

We formulate and consider the problem of an inextensible, unshearable, viscoelastic rod, with evolving natural configuration, moving on a plane. We prove that the dynamic equations describing quasistatic motion of an Eulerian strut, an…

数学物理 · 物理学 2022-10-04 K. R. Rajagopal , Casey Rodriguez

We consider the Cauchy problem for the system of elastodynamic equations in two dimensions. Specifically, we focus on materials characterized by a null condition imposed on the quadratic part of the nonlinearity. We can construct non-zero…

偏微分方程分析 · 数学 2025-02-12 Shunkai Mao , Peng Qu

We consider the Cauchy problem for the isentropic compressible Euler-Maxwell equations under general pressure laws in a three-dimensional periodic domain. For any smooth initial electron density away from the vacuum and smooth…

偏微分方程分析 · 数学 2023-05-23 Shunkai Mao , Peng Qu

We consider Cauchy's equation of motion for hyperelastic materials. The solution of this nonlinear initial-boundary value problem is the vector field which discribes the displacement which a particle of this material perceives when exposed…

偏微分方程分析 · 数学 2014-02-06 Arne Woestehoff , Thomas Schuster