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We prove the well--posedness of a dynamical perfect plasticity model under general assumptions on the stress constraint set and on the reference configuration. The problem is studied by combining both calculus of variations and hyperbolic…

偏微分方程分析 · 数学 2019-12-13 Jean-François Babadjian , Vito Crismale

One of the main theoretical issues in developing a theory of anisotropic viscoelastic media at finite strains lies in the proper definition of the material symmetry group and its evolution with time. In this paper the matter is discussed…

软凝聚态物质 · 物理学 2021-02-03 Jacopo Ciambella , Paola Nardinocchi

This paper resolves the global regularity problem for the three-dimensional incompressible magnetohydrodynamics (MHD) equations in the upper half-space with slip boundary conditions, in the presence of a background magnetic field. Motivated…

偏微分方程分析 · 数学 2025-08-14 Jincheng Gao , Lianyun Peng , Jiahong Wu , Zheng-an Yao

In the present paper, we study the uniform regularity and vanishing dissipation limit for the full compressible Navier-Stokes system whose viscosity and heat conductivity are allowed to vanish at different order. The problem is studied in a…

偏微分方程分析 · 数学 2015-08-18 Wang Yong

We consider a class of viscous fluids with a general monotone dependence of the viscous stress on the symmetric velocity gradient. We introduce the concept of dissipative solution to the associated initial boundary value problem inspired by…

偏微分方程分析 · 数学 2019-06-04 A. Abbatiello , E. Feireisl

In this paper, we investigate the uniform regularity for the isentropic compressible Navier-Stokes system with general Navier-slip boundary conditions (1.6) and the inviscid limit to the compressible Euler system. It is shown that there…

偏微分方程分析 · 数学 2015-01-09 Wang Yong , Xin Zhouping , Yong Yan

A universal description is proposed for generic viscoelastic systems with a single relaxation time. Foliation preserving diffeomorphisms are introduced as an underlying symmetry which naturally interpolates between the two extreme limits of…

高能物理 - 理论 · 物理学 2009-11-05 Tatsuo Azeyanagi , Masafumi Fukuma , Hikaru Kawai , Kentaroh Yoshida

We propose a new approach to models of general compressible viscous fluids based on the concept of dissipative solutions. These are weak solutions satisfying the underlying equations modulo a defect measure. A dissipative solution coincides…

偏微分方程分析 · 数学 2020-01-01 Anna Abbatiello , Eduard Feireisl , Antonin Novotny

In this paper, we show the incompressible and vanishing vertical viscosity limits for the strong solutions to the isentropic compressible Navier-Stokes system with anistropic dissipation, in a domain with Dirichlet boundary conditions in…

偏微分方程分析 · 数学 2025-01-10 Nader Masmoudi , Changzhen Sun , Chao Wang , Zhifei Zhang

In this paper we consider and generalize a model, recently proposed and analytically investigated in its quasi-stationary approximation by the authors, for visco-elasticity with large deformations and conditional compatibility, where the…

偏微分方程分析 · 数学 2024-03-14 Abramo Agosti , Michel Fremond

We cope with a free boundary fluid-structure interaction model. In the model, the viscous incompressible fluid interacts with elastic body via the common boundary. The motion of the fluid is governed by Navier-Stokes equations while the…

偏微分方程分析 · 数学 2019-02-19 Yizhao Qin , Pengfei Yao

This paper studies the dissipative structure of the system of equations that describes the motion of a compressible, isothermal, viscous-capillar fluid of Korteweg type in one space dimension. It is shown that the system satisfies the…

偏微分方程分析 · 数学 2022-01-06 Ramón G. Plaza , José Manuel Valdovinos

In this work we analyze the relation between the multiplicative decomposition $\mathbf F=\mathbf F^{e}\mathbf F^{p}$ of the deformation gradient as a product of the elastic and plastic factors and the theory of uniform materials. We prove…

材料科学 · 物理学 2015-05-13 V. Ciancio , M. Dolfin , M. Francaviglia , S. Preston

This paper resolves the global regularity problem for the three-dimensional compressible magnetohydrodynamics (MHD) equations in the three-dimensional whole space, in the presence of a background magnetic field. Motivated by geophysical…

偏微分方程分析 · 数学 2026-05-13 Jincheng Gao , Xianpeng Hu , Lianyun Peng , Jiahong Wu

We review our recent proposal for a universal description of generic single-component viscoelastic systems with a single relaxation time. Foliation preserving diffeomorphisms are introduced as an underlying symmetry which naturally…

高能物理 - 理论 · 物理学 2010-04-23 Tatsuo Azeyanagi , Masafumi Fukuma , Hikaru Kawai , Kentaroh Yoshida

We consider the coupled motion of a free rigid body immersed in an inviscid compressible isentropic fluid. By means of a vanishing viscosity limit, we obtain the local-in-time existence of a dissipative measure-valued solution to the model.…

偏微分方程分析 · 数学 2026-03-04 Qianfeng Li , Emil Wiedemann

A theoretical, and potentially also practical, problem with stochastic gradient descent is that trajectories may escape to infinity. In this note, we investigate uniform boundedness properties of iterates and function values along the…

机器学习 · 计算机科学 2022-06-23 Xiaoyu Wang , Mikael Johansson

In the variational principle leading to the Euler equation for a perfect fluid, we can use the method of undetermined multiplier for holonomic constraints representing mass conservation and adiabatic condition. For a dissipative fluid, the…

流体动力学 · 物理学 2012-06-03 Hiroki Fukagawa , Youhei Fujitani

Due to the absence of dissipation mechanism to the inviscid compressible systems, it is a challenging problem to prove their global solvability. In this paper, we are concerned with the initial-boundary value problem to the inviscid and…

偏微分方程分析 · 数学 2025-08-20 Jinkai Li , Liening Qiao

The goal of this paper is to study a nonlinear viscoelastic wave equation with strong damping, time-varying delay and dynamical boundary condition. By introducing suitable energy and Lyapunov functionals, under suitable assumptions, we then…

偏微分方程分析 · 数学 2015-06-11 Gang Li , Biqing Zhu , Danhua Wang
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