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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 57
DEVELOPMENTS IN COMPUTATIONAL MECHANICS WITH HIGH PERFORMANCE COMPUTING Edited by: B.H.V. Topping
Paper III.6
A Modified Augmented Lagrangian Method for Nearly Incompressible Problems M.H.B.M. Shariff
School of Computing and Mathematics, University of Teesside, Middlesbrough, England M.H.B.M. Shariff, "A Modified Augmented Lagrangian Method for Nearly Incompressible Problems", in B.H.V. Topping, (Editor), "Developments in Computational Mechanics with High Performance Computing", Civil-Comp Press, Edinburgh, UK, pp 101-106, 1999. doi:10.4203/ccp.57.3.6
Abstract
A modified augmented Lagrangian method and its associated
variational principles for nearly incompressible
elastic problems are presented. It is equivalent to the
augmented Lagrangian method when specialised to an incompressible
problem. The method solves a mixed finite
element formulation and is suitable for large scale problems,
parallel processing and distributed computing. Convergent
analyses of the method are given and applicability
of the proposed method to other similar problems is
indicated via a simple non-finite element, numerical test
problem. A two-dimensional finite element test problem
is given using an LBB element.
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