Comparison of some finite element methods for solving 3D heat transfer problems. Application to hot forming process simulation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Revue Européenne de Mécanique Numérique/European Journal of Computational Mechanics Année : 2004

Comparison of some finite element methods for solving 3D heat transfer problems. Application to hot forming process simulation

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Résumé

The thermal analysisusing standardlinear tetrahedral finite elements may be severely affected by spurious local extrema in the regions affected by thermal shocks; conceivably discouraging the use of such elements as a result. The present work proposes three numerical models based on the mixed temperature/heat flux formulation to solve the unsteady thermal problem. Our new model, called the Mixed continuous formulation, should allow to improve the thermomechanical coupling effects during the simulation of D forming processes: the spatial model is based on the Galerkin approach with the linear tetrahedral ¡£¢¥??¡§¢ mixed finite elements; time integration is based on an implicit scheme allowing better flexibility in the choice of time steps. For this study, the D finite element FORGE ©?R software, able to simulate strongly coupled thermomechanical problems and steel quenching, is required.
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Dates et versions

hal-01024457 , version 1 (16-07-2014)

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Céline Pelissou, Elisabeth Massoni, Jean-Loup Chenot. Comparison of some finite element methods for solving 3D heat transfer problems. Application to hot forming process simulation. Revue Européenne de Mécanique Numérique/European Journal of Computational Mechanics, 2004, 13 (5-6-7), pp.Pages .679-690. ⟨10.3166/reef.13.679-690⟩. ⟨hal-01024457⟩
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