The augmented Lagrangian method as a framework for stabilised methods in computational mechanics

E Burman, P Hansbo, MG Larson - Archives of Computational Methods in …, 2023 - Springer
In this paper we will present a review of recent advances in the application of the augmented
Lagrange multiplier method as a general approach for generating multiplier-free stabilised …

Isogeometric analysis for sixth-order boundary value problems of gradient-elastic Kirchhoff plates

J Niiranen, J Kiendl, AH Niemi, A Reali - Computer Methods in Applied …, 2017 - Elsevier
Sixth-order boundary value problems of a one-parameter gradient-elastic Kirchhoff plate
model are formulated in a weak form within an H 3 Sobolev space setting with the …

Variational formulation and isogeometric analysis for fourth-order boundary value problems of gradient-elastic bar and plane strain/stress problems

J Niiranen, S Khakalo, V Balobanov… - Computer Methods in …, 2016 - Elsevier
The fourth-order boundary value problems of one parameter gradient-elastic bar and plane
strain/stress models are formulated in a variational form within an H 2 Sobolev space setting …

An a posteriori error estimator for a quadratic C0-interior penalty method for the biharmonic problem

SC Brenner, T Gudi, L Sung - IMA Journal of Numerical Analysis, 2010 - academic.oup.com
An a posteriori error estimator for a quadratic C0-interior penalty method for the biharmonic
problem Page 1 IMA Journal of Numerical Analysis (2010) 30, 777–798 doi:10.1093/imanum/drn057 …

An a posteriori error indicator for discontinuous Galerkin approximations of fourth-order elliptic problems

EH Georgoulis, P Houston… - IMA journal of numerical …, 2011 - academic.oup.com
We introduce a residual-based a posteriori error indicator for discontinuous Galerkin
discretizations of the biharmonic equation with essential boundary conditions. We show that …

A decomposition result for Kirchhoff plate bending problems and a new discretization approach

K Rafetseder, W Zulehner - SIAM Journal on Numerical Analysis, 2018 - SIAM
A new approach is introduced for deriving a mixed variational formulation for Kirchhoff plate
bending problems with mixed boundary conditions involving clamped, simply supported …

Computing -Conforming Finite Element Approximations Without Having to Implement -Elements

M Ainsworth, C Parker - SIAM Journal on Scientific Computing, 2024 - SIAM
We develop a method to compute the-conforming finite element approximation to planar
fourth order elliptic problems without having to implement elements. The algorithm consists …

Discontinuous Petrov–Galerkin method with optimal test functions for thin-body problems in solid mechanics

AH Niemi, JA Bramwell, LF Demkowicz - Computer Methods in Applied …, 2011 - Elsevier
We study the applicability of the discontinuous Petrov–Galerkin (DPG) variational framework
for thin-body problems in structural mechanics. Our numerical approach is based on …

A mixed method for the biharmonic problem based on a system of first-order equations

EM Behrens, J Guzmán - SIAM Journal on Numerical Analysis, 2011 - SIAM
We introduce a new mixed method for the biharmonic problem. The method is based on a
formulation where the biharmonic problem is rewritten as a system of four first-order …

A new a posteriori error estimate for the Morley element

J Hu, Z Shi - Numerische Mathematik, 2009 - Springer
In this paper, we present a posteriori error analysis for the nonconforming Morley element of
the fourth order elliptic equation. We propose a new residual-based a posteriori error …