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A node-nested Galerkin multigrid method for metal forging simulation

Abstract : A node-nested Galerkin multigrid method is developed to solve systems provided by mixed formulations of 3D metal forming problems. An algebraic approach is used where operators are built on node-nested coarse meshes obtained by an automatic coarsening algorithm. This blackbox multigrid preconditioner is developed within the PETSc library. It is plugged to the FORGE3® finite element software. The linear rate of convergence and the very high efficiency of the resulting multigrid solver are evaluated for large scale problems with nonlinear behaviour.
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  • HAL Id : hal-00581743, version 1

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Benoît Rey, Katia Mocellin, Lionel Fourment. A node-nested Galerkin multigrid method for metal forging simulation. EMG 2005 - Multigrid, Multilevel and Multiscale Methods, Sep 2005, Delft, Netherlands. 10 p. - ISBN 90-9020969-7. ⟨hal-00581743⟩

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