Results 31 to 40 of about 289 (157)
Penalty method for unilateral contact problem with Coulomb's friction in time-fractional derivatives
Demonstratio MathematicaThe purpose of this work is to study a mathematical model that describes a contact between a deformable body and a rigid foundation. A linear viscoelastic Kelvin-Voigt constitutive law with time-fractional derivatives describes the material’s behavior ...
Essafi Lakbir, Bouallala Mustapha
doaj +1 more source
Método del elemento reproductor del núcleo para soluciones de problemas elasto-estáticos.
Ingeniería y Ciencia, 2012 El Método del Elemento Reproductor del Núcleo (RKEM) es una técnica relativamente nueva desarrollada para tener dos propiedades distinguidas: suavidad de orden arbitrario y funciones de interpolación de orden arbitrario.
Mario J Juha
doaj +1 more source
A fully-discrete finite element approximation for the eddy currents problem
Ingeniería y Ciencia, 2013 The eddy current model is obtained from Maxwell’s equations by neglecting the displacement currents in the Amp`ere-Maxwell’s law and it is commonly used in many problems in sciences, engineering and industry (e.g, in induction heating, electromagnetic ...
Ramiro Acevedo, Gerardo Loaiza
doaj +1 more source
, 1991 In this paper it is shown that for highly nonuniformly refined triangulations the condition number of the BPX preconditioner for elliptic finite element problems grows at most linearly in the depth of refinement.
Bornemann, Folkmar A.
core +1 more source
Isoparametric mixed finite element approximation of eigenvalues and eigenvectors of 4th order eigenvalue problems with variable coefficients [PDF]
, 2001 . Estimates for the combined eect of boundary approximation and numerical integration on the approximation of (simple) eigenvalues and eigenvectors of 4th order eigenvalue problems with variable/constant coecients in convex domains with curved boundary ...
Nataraj, Neela +4 more
core +1 more source
Finite Element Methods for the Incompressible Stokes Equations with Variable Viscosity
, 2020 Key words Incompressible Stokes equations, variable viscosity, finite element error analysis, dependency on the viscosity. MSC (2010) 65N30 Finite element error estimates are derived for the incompressible Stokes equations with variable viscosity.
Kristine Kaiser, Volker John, Julia Novo
core
Analyzing nonlinear Schrödinger equations by the complex variable element-free Galerkin method
Open MathematicsThis article proposes a complex variable element-free Galerkin (CVEFG) method for analyzing the nonlinear Schrödinger (NLS) equation. A second-order accurate scheme is presented to achieve temporal discretization and linearize the nonlinear term, and the
Liu ZhiXiu
doaj +1 more source
A comparison of two nonconforming finite element methods for linear three-field poroelasticity
Demonstratio MathematicaWe present and analyze two kinds of nonconforming finite element methods for three-field Biot’s consolidation model in poroelasticity. We employ the Crouzeix-Raviart element for one of the displacement component and conforming linear element for the ...
Guo Jun, Shi Yanchao, Luo Weihua
doaj +1 more source
Regularity results for p-Laplacians in pre-fractal domains
Advances in Nonlinear Analysis, 2018 We study obstacle problems involving p-Laplace-type operators in non-convex polygons. We establish regularity results in terms of weighted Sobolev spaces. As applications, we obtain estimates for the FEM approximation for obstacle problems in pre-fractal
Capitanelli Raffaela +2 more
doaj +1 more source
, 2003 We present some resolvent estimates of elliptic differential and finite-element operators in pairs of function spaces, for which the first space in a pair is endowed with stronger norm. In this work we deal with estimates in (Lebesgue, Lebesgue), (Hölder,
Nikolai Yu. Bakaev
core