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The augmented Lagrangian method as a framework for stabilised methods in computational mechanics
Department of Mathematics, University College London, London, United Kingdom.
Department of Mechanical Engineering, Jönköping University, Jönköping, Sweden.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för matematik och matematisk statistik.
2023 (engelsk)Inngår i: Archives of Computational Methods in Engineering, ISSN 1134-3060, E-ISSN 1886-1784, Vol. 30, s. 2579-2604Artikkel, forskningsoversikt (Fagfellevurdert) Published
Abstract [en]

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 methods. The augmented Lagrangian method consists of a standard Lagrange multiplier method augmented by a penalty term, penalising the constraint equations, and is well known as the basis for iterative algorithms for constrained optimisation problems. Its use as a stabilisation methods in computational mechanics has, however, only recently been appreciated. We first show how the method generates Galerkin/Least Squares type schemes for equality constraints and then how it can be extended to develop new stabilised methods for inequality constraints. Application to several different problems in computational mechanics is given.

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Springer Science+Business Media B.V., 2023. Vol. 30, s. 2579-2604
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URN: urn:nbn:se:umu:diva-204392DOI: 10.1007/s11831-022-09878-6ISI: 000920400800001Scopus ID: 2-s2.0-85146572606OAI: oai:DiVA.org:umu-204392DiVA, id: diva2:1733803
Forskningsfinansiär
Swedish Research Council, 2017-03911Swedish Research Council, 2018-05262Swedish Research Council, 2021-04925Tilgjengelig fra: 2023-02-03 Laget: 2023-02-03 Sist oppdatert: 2023-07-14bibliografisk kontrollert

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