Abstract
The identification of the material parameters of a given constitutive model can follow diverse methodologies and use distinct sets of experimental data. In order to easily compare different sets of material parameters, it is necessary to know how to establish the equivalence between identification results. This work explores the correlation between sets of parameters of constitutive models concerning the yield criterion and the isotropic and kinematic hardening laws. It is shown that distinct sets of parameters for a given constitutive model (yield criterion and isotropic and kinematic hardening laws) can describe the same material behavior, and a rule for matching the sets is established.
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Acknowledgements
This research work is sponsored by national funds from the Portuguese Foundation for Science and Technology (FCT) via the projects PTDC/EME–TME/113410/2009 and PEst-C/EME/UI0285/2013 and by FEDER funds through the program COMPETE – Programa Operacional Factores de Competitividade, under the project CENTRO–07–0224 -FEDER -002001 (MT4MOBI). One of the authors, P.A. Prates, was supported by a grant for scientific research from the Portuguese Foundation for Science and Technology. All supports are gratefully acknowledged.
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Prates, P.A., Oliveira, M.C. & Fernandes, J.V. On the equivalence between sets of parameters of the yield criterion and the isotropic and kinematic hardening laws. Int J Mater Form 8, 505–515 (2015). https://doi.org/10.1007/s12289-014-1173-z
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DOI: https://doi.org/10.1007/s12289-014-1173-z