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.
Files in this item
Showing items related by title, author, creator and subject.
Experimental and numerical study of the evolution of stored energy in metallic materials under cyclic loading MAREAU, Charles; MOREL, Franck (2014)In-service loading conditions usually generate complex cyclic stress states. As such, the choice of an appropriate multiaxial fatigue criterion plays a crucial role in obtaining correct fatigue predictions. In the case of ...
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 ...
Experimental and numerical study of the evolution of stored and dissipated energies in a medium carbon steel under cyclic loading MAREAU, Charles; CUILLERIER, Daniel; MOREL, Franck (Elsevier, 2013)To obtain robust estimations of the fatigue limit from energy-based fatigue criteria, constitutive laws must include a correct description of the energy balance when modeling the cyclic behavior. The present paper aims at ...
Development of a polycrystalline approach for the modelling of high cycle fatigue damage: Application to a HSLA steel ZGHAL, Jihed; MAREAU, Charles; MOREL, Franck (Technische Mechanik, 2015)For many metallic alloys, fatigue crack initiation is governed by the development of a localized plastic activity at the grain scale. Because of the irreversible nature of plasticity, a significant proportion of the total ...
Study of the contribution of different effects induced by the punching process on the high cycle fatigue strength of the M330-35A electrical steel DEHMANI, Helmi; BRUGGER, Charles; PALIN-LUC, Thierry; MAREAU, Charles; KOECHLIN, Samuel (Elsevier, 2016)Because of their improved magnetic properties, Fe-Si alloys are widely used for new electric motor generations. The use of punching process to obtain these components specially affects their mechanical behavior and fatigue ...