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Thermo‐mechanically coupled modeling and simulation of hot metal‐forming processes using adaptive remeshing method
Author(s) -
Parvizian F.,
Schneidt A.,
Svendsen B.,
Mahnken R.
Publication year - 2010
Publication title -
gamm‐mitteilungen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 18
eISSN - 1522-2608
pISSN - 0936-7195
DOI - 10.1002/gamm.201010008
Subject(s) - forging , materials science , extrusion , microstructure , finite element method , python (programming language) , thermoelastic damping , metal forming , mechanical engineering , work (physics) , structural engineering , metallurgy , computer science , thermal , engineering , thermodynamics , physics , operating system
The purpose of this work is to model and simulate hot metal forming processes in which material undergoes large deformations with help of the Finite Element (FE) software ABAQUS using Lagrangian formulation. Extrusion of aluminum alloys and forging of steels as two examples are taken into account in this work. To this end, a material model based on thermoelastic viscoplasticity is formulated for each case. The microstructural evolution is modeled effectively with the help of internal state variables. Element distortion and contact during the simulation of large deformation processes is controlled with the help of a custom adaptive remeshing system based on Python scripting and utilizable in commercial programs such as Abaqus. Simulation results for the microstructural development during extrusion as a func‐tion of process conditions demonstrate the sensitivity of microstructure development to these conditions. Comparison of the simulation results for the microstructure evolution with corresponding experimental results show good qualitative agreement (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)