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We establish H\"older stability of an inverse hyperbolic obstacle problem. Mainly, we study the problem of reconstructing an unknown function defined on the boundary of the obstacle from two measurements taken on the boundary of a domain…

偏微分方程分析 · 数学 2025-03-24 Mourad Choulli , Hiroshi Takase

We consider the initial boundary value problem for a model system of one-dimensional equations which describe unsteady polytropic motions of a mixture of viscous compressible fluids. We prove the global existence and uniqueness theorem for…

偏微分方程分析 · 数学 2017-11-22 Dmitriy Prokudin

In this work, we study the motion of a rigid body in a bounded domain which is filled with a compressible isentropic fluid. We consider the Navier-slip boundary condition at the interface as well as at the boundary of the domain. This is…

偏微分方程分析 · 数学 2021-03-17 S. Necasova , M. Ramaswamy , A. Roy , A. Schlomerkemper

A theory and computational method are provided for the calculation of lipid membranes elastic parameters, which overcomes the difficulties of the existing approaches and can be applied not only to single-component but also to…

软凝聚态物质 · 物理学 2023-07-06 Maksim A. Kalutsky , Timur R. Galimzyanov , Konstantin V. Pinigin

We consider the inverse boundary value problem of recovering piecewise homogeneous elastic tensor and piecewise homogeneous mass density from a localized lateral Dirichlet-to-Neumann or Neumann-to-Dirichlet map for the elasticity equation…

偏微分方程分析 · 数学 2019-03-05 Cătălin I. Cârstea , Gen Nakamura , Lauri Oksanen

This paper presents a mathematical framework for a flexible pressure-sensor model using electrical impedance tomography (EIT). When pressure is applied to a conductive membrane patch with clamped boundary, the pressure-induced surface…

偏微分方程分析 · 数学 2014-09-15 Habib Ammari , Kyungkeun Kang , Kyounghun Lee , Jin Keun Seo

The buckling of thin elastic sheets is a classic mechanical instability that occurs over a wide range of scales. In the extreme limit of atomically thin membranes like graphene, thermal fluctuations can dramatically modify such mechanical…

统计力学 · 物理学 2021-12-13 Suraj Shankar , David R. Nelson

Well-posedness of a free boundary problem for electrostatic microelectromechanical systems (MEMS) is investigated when nonlinear bending effects are taken into account. The model describes the evolution of the deflection of an electrically…

偏微分方程分析 · 数学 2014-09-26 Philippe Laurencot , Christoph Walker

A flexible membrane deforming its shape in time can self-propel in a viscous fluid. Alternatively, if the membrane is anchored, its deformation will lead to fluid transport. Past work in this area focused on situations where the deformation…

软凝聚态物质 · 物理学 2013-02-12 Arthur A. Evans , Eric Lauga

We consider a model for elastic dislocations in geophysics. We model a portion of the Earth's crust as a bounded, inhomogeneous elastic body with a buried fault surface, along which slip occurs. We prove well-posedness of the resulting…

偏微分方程分析 · 数学 2025-02-07 Andrea Aspri , Elena Beretta , Anna L. Mazzucato

In this paper we are concerned with the effects of anisotropic pressure on the boundary conditions of anisotropic Lane-Emden equation and homology theorem. Some new exact solutions of this equation are derived. Then some of the theorems…

广义相对论与量子宇宙学 · 物理学 2015-07-10 F. Shojai , M. R. Fazel , A. Estepanian , M. Kohandel

Anchorage-dependent cells collect information on the mechanical properties of the environment through their contractile machineries and use this information to position and orient themselves. Since the probing process is anisotropic,…

软凝聚态物质 · 物理学 2007-05-23 I. B. Bischofs , S. A. Safran , U. S. Schwarz

Many proteins and peptides have an intrinsic capacity to sense and induce membrane curvature, and play crucial roles for organizing and remodelling cell membranes. However, the molecular driving forces behind these processes are not well…

生物物理 · 物理学 2023-07-19 Jordi Gómez-Llobregat , Federico Elías-Wolff , Martin Lindén

Integral expressions are determined for the elastic displacement and stress fields due to stationary or moving dislocation loops in finite samples. These general expressions are valid for anisotropic media as well. Specifically for the…

凝聚态物理 · 物理学 2017-02-08 Rodrigo Arias

We are concerned with the well-posedness of linear elliptic systems posed on $\mathbb{R}^d$. The concrete problem of interest, for which we require this theory, arises from the linearization of the equations of anisotropic finite…

偏微分方程分析 · 数学 2012-04-16 Christoph Ortner , Endre Suli

We analyze a mathematical model of elastic dislocations with applications to geophysics, where by an elastic dislocation we mean an open, oriented Lipschitz surface in the interior of an elastic solid, across which there is a discontinuity…

偏微分方程分析 · 数学 2019-11-13 Andrea Aspri , Elena Beretta , Anna L. Mazzucato , Maarten V. de Hoop

We derive the equations of motion for relativistic elastic membranes, that is, two-dimensional elastic bodies whose internal energy depends only on their stretching, starting from a variational principle. We show how to obtain conserved…

广义相对论与量子宇宙学 · 物理学 2025-01-03 Paulo Mourão , José Natário , Rodrigo Vicente

We consider the problem of determining an unaccessible part of the boundary of a conductor by mean of thermal measurements. We study a problem of corrosion where a Robin type condition is prescribed on the damaged part and we prove…

偏微分方程分析 · 数学 2011-07-27 V. Bacchelli , M. Di Cristo , E. Sincich , S. Vessella

We present a method of deriving two boundary conditions at a thin membrane for diffusion from experimental data. This method can be really useful in complex membrane systems in which we do not know mechanisms of processes occurring within…

统计力学 · 物理学 2018-08-01 Katarzyna D. Lewandowska , Tadeusz Kosztołowicz

Estimation of solution norms and stability for time-dependent nonlinear systems is ubiquitous in numerous engineering, natural science and control problems. Yet, practically valuable results are rare in this area. This paper develops a…

动力系统 · 数学 2020-01-22 Mark A. Pinsky , Steve Koblik