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In this paper, a nonconforming finite element method has been proposed and analyzed for the von Karman equations that describe bending of thin elastic plates. Optimal order error estimates in broken energy and $H^1$ norms are derived under…

数值分析 · 数学 2015-07-01 Gouranga Mallik , Neela Nataraj

We employ surface differential calculus to derive models for Kirchhoff plates including in-plane membrane deformations. We also extend our formulation to structures of plates. For solving the resulting set of partial differential equations,…

数值分析 · 数学 2017-02-15 Peter Hansbo , Mats G. Larson

A general framework is developed to study the deformation and stress response in F{\"o}ppl-von K{\'a}rm{\'a}n shallow shells for a given distribution of defects, such as dislocations, disclinations, and interstitials, and metric anomalies,…

软凝聚态物质 · 物理学 2022-08-17 Manish Singh , Ayan Roychowdhury , Anurag Gupta

A numerical scheme is proposed to identify low energy configurations of a F\"oppl-von K\'arm\'an model for bilayer plates. The dependency of the corresponding elastic energy on the in-plane displacement $u$ and the out-of-plane deflection…

数值分析 · 数学 2025-02-25 Sören Bartels , Bernd Schmidt , Philipp Tscherner

Tectonic faults are commonly modelled as Volterra or Somigliana dislocations in an elastic medium. Various solution methods exist for this problem. However, the methods used in practice are often limiting, motivated by reasons of…

We consider linear scalar wave equations with a hereditary integral term of the kind used to model viscoelastic solids. The kernel in this Volterra integral is a sum of decaying exponentials (The so-called Maxwell, or Zener model) and this…

数值分析 · 数学 2021-12-23 Yongseok Jang , Simon Shaw

We derive the variational limiting theory of thin films, parallel to the F\"oppl-von K\'arm\'an theory in the nonlinear elasticity, for films that have been prestrained and whose thickness is a general non-constant function. Using…

偏微分方程分析 · 数学 2024-11-06 Hui Li

We deduce a non-linear continuum model of graphene for the case of finite out-of-plane displacements and small in-plane deformations. On assuming that the lattice interactions are governed by the Brenner's REBO potential of 2nd generation…

介观与纳米尺度物理 · 物理学 2019-03-01 Cesare Davini , Antonino Favata , Roberto Paroni

In the context of Discontinuous Galerkin methods, we study approximations of nonlinear variational problems associated with convex energies. We propose element-wise nonconforming finite element methods to discretize the continuous…

We investigate the behavior of non-Euclidean plates with constant negative Gaussian curvature using the F\"oppl-von K\'arm\'an reduced theory of elasticity. Motivated by recent experimental results, we focus on annuli with a periodic…

最优化与控制 · 数学 2015-06-04 John Gemmer , Shankar Venkataramani

In this work we consider the numerical solution of incompressible flows on two-dimensional manifolds. Whereas the compatibility demands of the velocity and the pressure spaces are known from the flat case one further has to deal with the…

计算物理 · 物理学 2020-03-26 Philip L. Lederer , Christoph Lehrenfeld , Joachim Schöberl

We consider a system of second order non-linear elliptic partial differential equations that models the equilibrium configurations of a two dimensional planar bistable nematic liquid crystal device. Discontinuous Galerkin finite element…

数值分析 · 数学 2020-05-29 Ruma Rani Maity , Apala Majumdar , Neela Nataraj

In this paper, we present an algorithm for the solution of the von Karman equations of elasticity theory and related problems. Our method of successive reconditioning is able to avoid convergence problems at any ratio of the nonlinear…

材料科学 · 物理学 2009-10-28 Pedro Patricio da Silva , Werner Krauth

We derive a F\"{o}ppl-von K\'{a}rm\'{a}n-type constitutive model for solid liquid crystalline plates where the nematic director may or may not rotate freely relative to the elastic network. To obtain the reduced two-dimensional model, we…

软凝聚态物质 · 物理学 2020-07-30 L. Angela Mihai , Alain Goriely

This article discusses the well-posedness and error analysis of the coupling of finite and boundary elements for transmission or contact problems in nonlinear elasticity. It concerns W^{1,p}-monotone Hencky materials with an unbounded…

数值分析 · 数学 2023-03-09 Heiko Gimperlein , Ernst P. Stephan

We study the asymptotic behaviour, in the sense of $\Gamma$-convergence, of a thin incompressible magnetoelastic plate, as its thickness goes to zero. We focus on the linearized von K\'arm\'an regime. The model features a mixed…

偏微分方程分析 · 数学 2022-01-06 Marco Bresciani

We determine stability boundaries for the wrinkling of highly uni-directionally stretched, finely thin, rectangular elastic sheets. For a given fine thickness and length, a stability boundary here is a curve in the parameter plane, aspect…

软凝聚态物质 · 物理学 2016-12-21 Qingdu Li , Timothy J. Healey

We consider a thin elastic sheet with a finite number of disclinations in a variational framework in the F\"oppl-von K\'arm\'an approximation. Under the non-physical assumption that the out-of-plane displacement is a convex function, we…

偏微分方程分析 · 数学 2024-07-24 Peter Gladbach , Heiner Olbermann

We study the static and dynamic structure of thermally fluctuating elastic thin sheets by investigating the overdamped dynamic F\"oppl-von K\'arm\'an equation, in which the F\"oppl-von K\'arm\'an equation from elasticity theory is driven by…

软凝聚态物质 · 物理学 2023-05-10 Chanania Steinbock , Eytan Katzav

A Galerkin finite element method for the membrane elasticity problem on a meshed surface is constructed by using two-dimensional elements extended into three dimensions. The membrane finite element model is established using the intrinsic…

数值分析 · 数学 2012-03-16 Peter Hansbo , Mats G. Larson
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