# Discontinuous Galerkin and the Crouzeix–Raviart element : application to elasticity

- Volume: 37, Issue: 1, page 63-72
- ISSN: 0764-583X

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topHansbo, Peter, and Larson, Mats G.. "Discontinuous Galerkin and the Crouzeix–Raviart element : application to elasticity." ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique 37.1 (2003): 63-72. <http://eudml.org/doc/245520>.

@article{Hansbo2003,

abstract = {We propose a discontinuous Galerkin method for linear elasticity, based on discontinuous piecewise linear approximation of the displacements. We show optimal order a priori error estimates, uniform in the incompressible limit, and thus locking is avoided. The discontinuous Galerkin method is closely related to the non-conforming Crouzeix–Raviart (CR) element, which in fact is obtained when one of the stabilizing parameters tends to infinity. In the case of the elasticity operator, for which the CR element is not stable in that it does not fulfill a discrete Korn’s inequality, the discontinuous framework naturally suggests the appearance of (weakly consistent) stabilization terms. Thus, a stabilized version of the CR element, which does not lock, can be used for both compressible and (nearly) incompressible elasticity. Numerical results supporting these assertions are included. The analysis directly extends to higher order elements and three spatial dimensions.},

author = {Hansbo, Peter, Larson, Mats G.},

journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique},

keywords = {Crouzeix–Raviart element; Nitsche’s method; discontinuous Galerkin; incompressible elasticity; Crouzeix-Raviart element; Nitsche's method},

language = {eng},

number = {1},

pages = {63-72},

publisher = {EDP-Sciences},

title = {Discontinuous Galerkin and the Crouzeix–Raviart element : application to elasticity},

url = {http://eudml.org/doc/245520},

volume = {37},

year = {2003},

}

TY - JOUR

AU - Hansbo, Peter

AU - Larson, Mats G.

TI - Discontinuous Galerkin and the Crouzeix–Raviart element : application to elasticity

JO - ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique

PY - 2003

PB - EDP-Sciences

VL - 37

IS - 1

SP - 63

EP - 72

AB - We propose a discontinuous Galerkin method for linear elasticity, based on discontinuous piecewise linear approximation of the displacements. We show optimal order a priori error estimates, uniform in the incompressible limit, and thus locking is avoided. The discontinuous Galerkin method is closely related to the non-conforming Crouzeix–Raviart (CR) element, which in fact is obtained when one of the stabilizing parameters tends to infinity. In the case of the elasticity operator, for which the CR element is not stable in that it does not fulfill a discrete Korn’s inequality, the discontinuous framework naturally suggests the appearance of (weakly consistent) stabilization terms. Thus, a stabilized version of the CR element, which does not lock, can be used for both compressible and (nearly) incompressible elasticity. Numerical results supporting these assertions are included. The analysis directly extends to higher order elements and three spatial dimensions.

LA - eng

KW - Crouzeix–Raviart element; Nitsche’s method; discontinuous Galerkin; incompressible elasticity; Crouzeix-Raviart element; Nitsche's method

UR - http://eudml.org/doc/245520

ER -

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