88713 hdl_2072_1177 oai:www.recercat.cat:2072/182626 We study preconditioning techniques for discontinuous Galerkin discretizations of isotropic linear elasticity problems in primal (displacement) formulation. We propose subspace correction methods based on a splitting of the vector valued piecewise linear discontinuous finite element space, that are optimal with respect to the mesh size and the Lamé parameters. The pure displacement, the mixed and the traction free problems are discussed in detail. We present a convergence analysis of the proposed preconditioners and include numerical examples that validate the theory and assess the performance of the preconditioners. eng Ayuso, B. Georgiev, Ivan Kraus, Johannes Zikatanov, Ludmil Centre de Recerca Matemàtica Centre de Recerca Matemàtica 2011 A subspace correction method for discontinuous Galerkin discretizations of linear elasticity equations 28 p. L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess 517 Equacions lineals Elasticitat info:eu-repo/semantics/preprint Prepublicacions del Centre de Recerca Matemàtica ; 1056 http://ddd.uab.cat/pub/prepub/2011/hdl_2072_182626/Pr1056.pdf 304514 28 Adreça alternativa http://hdl.handle.net/2072/182626 PREPUB UAB driver oai:ddd.uab.cat:88713