Results 41 to 50 of about 651,142 (275)
A first-order stabilization-free Virtual Element Method
Applied Mathematics Letters, 2023 In this paper, we introduce a new Virtual Element Method (VEM) not requiring any stabilization term based on the usual enhanced first-order VEM space. The new method relies on a modified formulation of the discrete diffusion operator that ensures stability preserving all the properties of the differential operator.
Berrone, S +3 more
openaire +4 more sources
Refined shell elements for the analysis of functionally graded structures [PDF]
, 2011 The present paper considers the static analysis of plates and shells made of Functionally Graded Material (FGM), subjected to mechanical loads. Refined models based on the Carrera's Unified Formulation (CUF) are employed to account for grading ...
Carrera, Erasmo +3 more
core +1 more source
The pionic beta decay in chiral perturbation theory [PDF]
, 2002 Within the framework of chiral perturbation theory with virtual photons and leptons, we present an updated analysis of the pionic beta decay including all electromagnetic contributions of order e**2 p**2.
Cirigliano, V. +3 more
core +2 more sources
Revista UIS IngenieríasThis work presents a comparative study of numerical methods for solving the elasticity equations in topology optimization problems. A computational framework written in MATLAB is used for solving topology optimization problems using different types of ...
Andrés José Rodríguez Torres +2 more
doaj +1 more source
Heavy quark effects on parton distribution functions in the unpolarized virtual photon up to the next-to-leading order in QCD [PDF]
, 2010 We investigate the heavy quark mass effects on the parton distribution functions in the unpolarized virtual photon up to the next-to-leading order in QCD.
A. Vogt +6 more
core +3 more sources
FETI-DP for the Three Dimensional Virtual Element Method [PDF]
SIAM Journal on Numerical Analysis, 2020 We deal with the Finite Element Tearing and Interconnecting Dual Primal (FETI-DP) preconditioner for elliptic problems discretized by the virtual element method (VEM). We extend the result of [22] to the three dimensional case. We prove polylogarithmic condition number bounds, independent of the number of subdomains, the mesh size, and jumps in the ...
S Bertoluzza, M Pennacchio, D Prada
openaire +5 more sources
A Dual Hybrid Virtual Element Method for Plane Elasticity Problems
, 2019 A dual hybrid Virtual Element scheme for plane linear elastic problems is presented and analysed. In particular, stability and convergence results have been established.
Artioli, Edoardo +3 more
core +1 more source
A Plane Wave Virtual Element Method for the Helmholtz Problem [PDF]
, 2015 We introduce and analyze a virtual element method (VEM) for the Helmholtz problem with approximating spaces made of products of low order VEM functions and plane waves. We restrict ourselves to the 2D Helmholtz equation with impedance boundary conditions
Perugia, Ilaria +2 more
core +2 more sources
When rational functions meet virtual elements: the lightning virtual element method
CalcoloAbstractWe propose a lightning Virtual Element Method that eliminates the stabilisation term by actually computing the virtual component of the local VEM basis functions using a lightning approximation. In particular, the lightning VEM approximates the virtual part of the basis functions using rational functions with poles clustered exponentially close
Trezzi, M, Zerbinati, U
openaire +2 more sources
Dual virtual element method in presence of an inclusion
, 2017 We consider a Darcy problem for saturated porous media written in dual formulation in presence of a fully immersed inclusion. The lowest order virtual element method is employ to derive the discrete approximation.
Fumagalli, Alessio
core +1 more source