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Finite Element Simulation of Steel Solidification under High Temperature
Author(s) -
Moj Lukas,
Ricken Tim,
Göhler Klaus
Publication year - 2013
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201310091
Subject(s) - finite element method , materials science , shrinkage , residual stress , isotropy , hardening (computing) , slab , mechanics , compressibility , von mises yield criterion , plasticity , metallurgy , structural engineering , composite material , engineering , physics , layer (electronics) , quantum mechanics
Finite element simulation of hot working of steel has gained significant importance in steel industries. The aim of describing such processes using the finite element method is to predict phenomena like shrinkage during solidification. Due to this thermo‐mechanical behaviour residual stresses appear, which cause cracks and the final steel slab loses its required properties as a result. We propose a two‐phase incompressible model based on the Theory of Porous Media (TPM) for a numerical description of steelmaking processes. A thermo‐mechanical coupling is required to model a high temperature‐dependency. In order to consider thermal expansion of solid, a multiplicative decomposition of the deformation gradient into a mechanical and a thermal part has been applied. The Von Mises J 2 plasticity with isotropic hardening criterion has been selected for the solid‐phase of the model. Representative numerical examples, as well as the influence of single material parameters on the model will be shown. (© 2013 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)