Relevance of multiscale approach for the modeling of various magneto-mechanical problems

Abstract : Our time is characterized by an increasingly intensive use of actuators in extremely large fields of applications, from the largest to the smallest scales. The miniaturization of these systems adds new design constraints and requires the development of materials with controlled properties and robust models. One of the solutions being considered is the use of material exhibiting at least one strong multiphysic coupling (one of the physic being mechanics). This includes magnetostrictive materials, classical (SMA) or magnetic shape memory alloys (MSMA), piezoelectric materials, multi-ferroic composite media, etc. One of the modeling challenges is to better describe the complex interactions observed experimentally (nonlinearity, non-monotony, irreversibly, dynamic and multiaxial effects etc ...), and to derive constitutive models with sufficient accuracy and validity range for the considered applications without requiring full field approach (micromagnetism, phase field) that still remain highly time-consuming. In this communication, the modeling of materials exhibiting magneto-elastic behavior in a reversible framework is addressed.
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Submitted on : Sunday, October 7, 2018 - 12:39:08 AM
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Olivier Hubert. Relevance of multiscale approach for the modeling of various magneto-mechanical problems. 15th International Workshop on 1&2 Dimensional Magnetic Measurement and Testing (2DM), Sep 2018, Grenoble, France. ⟨hal-01889543⟩

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