Comptes Rendus
Prediction of self-heating measurements under proportional and non-proportional multiaxial cyclic loadings
[Prévision d'essais d'auto-échauffement sous chargements multiaxiaux hétérogènes]
Comptes Rendus. Mécanique, Volume 335 (2007) no. 2, pp. 81-86.

Les essais d'auto-échauffement permettent une estimation rapide des caractéristiques de fatigue. Ils sont réalisés ici sur un acier C45 sous chargements de traction–torsion. Un modèle prenant en compte l'hétérogénéité de la dissipation est proposé. Il permet de rendre compte des mesures thermiques sous trajets proportionnels et non-proportionnels.

Self-heating measurements under cyclic loadings allow for fast estimations of fatigue properties. These tests are performed under tension–torsion loadings on a medium-carbon steel and a model accounting for heterogeneities is proposed to analyse heat transfer results. Both proportional and non-proportional loading paths are predicted.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crme.2007.01.002
Keywords: Fatigue, Microplasticity, Poisson point process, Heterogeneous stress, Dissipation
Mot clés : Fatigue, Microplasticité, Processus ponctuel de Poisson, Contraintes hétérogènes, Dissipation
Martin Poncelet 1 ; Cédric Doudard 2 ; Sylvain Calloch 2 ; François Hild 1 ; Bastien Weber 3 ; André Galtier 3

1 LMT-Cachan, ENS de Cachan, CNRS–UMR 8535, université Paris 6, 61, avenue du Président-Wilson, 94235 Cachan cedex, France
2 Laboratoire de mécanique des structures navales, ENSIETA, 2, rue François-Verny, 29806 Brest cedex 9, France
3 ARCELOR Research, voie romaine, BP 30320, 57283 Maizières-lès-Metz cedex, France
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     title = {Prediction of self-heating measurements under proportional and non-proportional multiaxial cyclic loadings},
     journal = {Comptes Rendus. M\'ecanique},
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Martin Poncelet; Cédric Doudard; Sylvain Calloch; François Hild; Bastien Weber; André Galtier. Prediction of self-heating measurements under proportional and non-proportional multiaxial cyclic loadings. Comptes Rendus. Mécanique, Volume 335 (2007) no. 2, pp. 81-86. doi : 10.1016/j.crme.2007.01.002. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2007.01.002/

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[8] P. Cugy, A. Galtier, Microplasticity and temperature increase in low carbon steel, in: Proceedings of the 7th Int. Fat. Conf., Stockholm (Sweden), 2002

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