Estimation of the mesoscopic thermoplastic dissipation in High-Cycle FatigueEstimation de la dissipation thermoplastique en fatigue à grand nombre de cycles |
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Authors: | Eric Charkaluk Andrei Constantinescu |
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Institution: | 1. Laboratoire de mécanique de Lille – CNRS UMR 8107, boulevard Paul-Langevin, 59655 Villeneuve d''Ascq cedex, France;2. Laboratoire de mécanique des solides – CNRS UMR 7649, École polytechnique, 91128 Palaiseau cedex, France |
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Abstract: | A series of High-Cycle Fatigue (HCF) criteria for polycrystalline materials is based on a multiscale interpretation, proposed initially by Dang Van, in which the principal concepts are a two scales model and a shakedown condition. The purpose of this Note is to extend the study of the different dissipative regimes during cyclic loading within this framework by using a self consistent homogenization scheme in coupled thermoplasticity. It is shown that the Sachs and Lin-Taylor schemes are not able to represent the thermal evolutions observed during fatigue tests. To cite this article: E. Charkaluk, A. Constantinescu, C. R. Mecanique 334 (2006). |
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Keywords: | Fatigue Dissipation Micromechanics Self-consistent scheme Fatigue Dissipation Micromécanique Schéma autocohérent |
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