Modelling the effect of microstructure evolution on the macroscopic behavior of single phase and dual phase steels: Application to sheet forming process
Conférence invitée
Date
2015Résumé
The aim of this work is to develop a dislocation density based model for IF and DP steels that incorporates details of the microstructure evolution at the grain-size scale. The model takes into account (i) the contribution of the chemical composition for the prediction of the initial yield stress, (ii) the description of initial texture anisotropy by incorporating grain-size dependent anisotropy coefficients in Hill’48 yield criterion, (iii) the contribution of three dislocation density “families” that are associated with forward, reverse and latent structures. It reproduces the macroscopic transient behaviors observed when strain-path changes occur. The model is implemented in FE code in order to assess its predictive capabilities in case of industrial applications.
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Documents liés
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Communication avec acteCARVALHO RESENDE, Tales; BOUVIER, Salima; SABLIN, Simon-Serge; ABED-MERAIM, Farid ; BALAN, Tudor (Magdeburger Verein für Technische Mechanik e.V. and Otto-von-Guericke-University Magdeburg, 2009)With a view to environmental, economic and safety concerns, car manufacturers need to design lighter and safer vehicles in ever shorter development times. In recent years, High Strength Steels (HSS) like Interstitial Free ...
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Communication sans acteCARVALHO RESENDE, Tales; SAADAOUI, Ayoub; BOUVIER, Salima; SABLIN, Simon-Serge; ABED-MERAIM, Farid ; BALAN, Tudor (2010)With a view to environmental, economic and safety concerns, car manufacturers need to design lighter and safer vehicles in ever-shorter development times. In recent years, High Strength Steels (HSS) like Interstitial Free ...
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Article dans une revue avec comité de lectureCARVALHO RESENDE, Tales; BOUVIER, Salima; SABLIN, Simon-Serge; ABED-MERAIM, Farid ; BALAN, Tudor (Elsevier, 2013)Sheet metal forming processes involve multi-axial strain paths. For the numerical simulation of such processes, an appropriate constitutive model that properly describes material behavior at large strain is required. For ...
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Article dans une revue avec comité de lectureCARVALHO RESENDE, Tales; BOUVIER, Salima; SABLIN, Simon-Serge; ABED-MERAIM, Farid ; BALAN, Tudor (IOP Publishing, 2013)This paper investigates a recently developed elasto-plastic constitutive model. For this purpose, the model was implemented in a commercial finite element code and was used to simulate the cross-die deep drawing test. Deep ...
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Article dans une revue avec comité de lectureCARVALHO RESENDE, Tales; BOUVIER, Salima; SABLIN, Simon-Serge; ABED-MERAIM, Farid ; BALAN, Tudor (2010)With a view to environmental, economic and safety concerns, car manufacturers need to design lighter and safer vehicles in ever shorter development times. In recent years, High Strength Steels (HSS) like Interstitial Free ...