Semi Phenomenological Modelling of the Behaviour of Trip Steels- Application to Sheet Metal Forming

A semi-phenomenological model is developed based on a mean-field description of the TRIP behaviour for the simulation of metal forming processes [1]. Within the metastable austenitic phase exhibiting martensitic transformation, a mean field approach is introduced at the phase level with the concept...

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Bibliographic Details
Published in:International journal of material forming 2010-04, Vol.3 (Suppl 1), p.69-72
Main Authors: Kubler, R., Berveiller, M., Buessler, P., Lemoine, X.
Format: Article
Language:English
Subjects:
CAE) and Design
Computational Intelligence
Computer-Aided Engineering (CAD
Engineering
Machines
Manufacturing
Materials Science
Mechanical Engineering
Multiscale approaches: A. M. Habraken
Processes
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Summary:A semi-phenomenological model is developed based on a mean-field description of the TRIP behaviour for the simulation of metal forming processes [1]. Within the metastable austenitic phase exhibiting martensitic transformation, a mean field approach is introduced at the phase level with the concept of Mean Instantaneous Transformation Strain (MITS) accompanying transformation. Within the framework of the thermodynamics of irreversible processes, a transformation criterion and martensitic volume fraction evolution are determined. A multiscale scheme is used to model the behaviour of TRIP steels. The model reproduces the increase in ductility and the multiaxial behaviour of a multiphased TRIP steel. In this study, this new model is implemented in the finite element code Abaqus Explicit for metal forming simulations. The simulations are compared to experimental data.
ISSN:1960-6206
1960-6214
DOI:10.1007/s12289-010-0709-0