Results 31 to 40 of about 4,650,450 (283)

A Hybridized Mixed Approach for Efficient Stress Prediction in a Layerwise Plate Model

open access: yesMathematics, 2022
Building upon recent works devoted to the development of a stress-based layerwise model for multilayered plates, we explore an alternative finite-element discretization to the conventional displacement-based finite-element method.
Lucille Salha   +3 more
doaj   +1 more source

Conforming finite element methods for the clamped plate problem [PDF]

open access: yes, 1975
Finite element methods for solving biharmonic boundary value problems are considered. The particular problem discussed is that of a clamped thin plate. This problem is reformulated in a weak, form in the Sobolev space Techniques for setting up conforming
Whiteman, J R
core   +5 more sources

Realistic computable error bounds for three dimensional finite element analyses in linear elasticity [PDF]

open access: yes, 2011
We obtain a computable estimator for the energy norm of the error in piecewise affine and piecewise quadratic finite element approximations of linear elasticity in three dimensions.
Rankin, Richard Andrew Robert   +1 more
core   +3 more sources

Superconvergence of Semidiscrete Splitting Positive Definite Mixed Finite Elements for Hyperbolic Optimal Control Problems

open access: yesAdvances in Mathematical Physics, 2022
In this paper, we consider semidiscrete splitting positive definite mixed finite element methods for optimal control problems governed by hyperbolic equations with integral constraints.
Yuchun Hua, Yuelong Tang
doaj   +1 more source

An augmented mixed finite element method for nonlinear elasticity problems

open access: yes四川大学学报. 自然科学版, 2021
This paper introduces and analyses a full augmented mixed finite element method for the nonlinear elasticity problems with strongly imposed symmetry stress tensor.
ZHANG Tian-Tian, ZHANG Bai-Ju
doaj  

Stress-strain state of elastic shell based on mixed finite element

open access: yesMagazine of Civil Engineering, 2023
In a mixed formulation, a four-node finite element was developed, which is a fragment of the middle surface of the elastic shell. Longitudinal forces and bending moments, as well as displacements and their first derivatives with respect to curvilinear ...
Klochkov Yuriy   +4 more
doaj   +1 more source

Finite element error estimates for a mixed degenerate parabolic model

open access: yesComptes Rendus. Mathématique, 2022
The aim of this note is to deduce error estimates for a fully-discrete finite element method approximation of a kind of degenerate mixed parabolic equations.
Acevedo Martínez, Ramiro Miguel   +1 more
doaj   +1 more source

A mixed discontinuous/continuous finite element pair for shallow-water ocean modelling [PDF]

open access: yes, 2008
18.02.14 KB. Ok to add accepted version to spiral, Elsevier says ok while mandate not enforced.We introduce a mixed discontinuous/continuous finite element pair for ocean modelling, with continuous quadratic layer thickness and discontinuous velocity. We
Cotter, CJ   +5 more
core   +1 more source

Theoretical stability analysis of mixed finite element model of shale-gas flow with geomechanical effect

open access: yesOil & Gas Science and Technology, 2020
In this work, we introduce a theoretical foundation of the stability analysis of the mixed finite element solution to the problem of shale-gas transport in fractured porous media with geomechanical effects.
El-Amin Mohamed F.   +2 more
doaj   +1 more source

On mixed finite element techniques for elliptic problems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
The main aim of this paper is to consider the numerical approximation of mildly nonlinear elliptic problems by means of finite element methods of mixed type.
M. Aslam Noor
doaj   +1 more source

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