Evolution du bilan énergétique dans les matériaux métalliques sous sollicitation cyclique.
TypeCommunications avec actes
In the case of cyclic plasticity, the validity of a constitutive model is usually assessed using stress-strain curves. However, this description can be enriched by adopting an energetic point of view. Thus, in the present work, a multiscale model is developed to estimate the amount of energy which is either dissipated into heat or stored in the material in a medium carbon steel under cyclic loading. The results emphasize the heterogeneous aspect of the stored and dissipated energy fields at a microscopic scale.
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A crystal plasticity based approach for the modelling of high cycle fatigue damage in metallic materials ZGHAL, Jihed; GMATI, Hela; MAREAU, Charles; MOREL, Franck (Sage Pub, 2016)In this paper, a polycrystalline model is proposed to describe the fatigue behaviour of metallic materials in the high cycle fatigue regime. The model is based on a multiscale approach, which allows the connection of local ...
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