Modeling and identification of the constitutive behaviour of MRE's.

Abstract eng:
In this paper, we study a class of active materials named magneto-rheological elastomers (MREs) with a main focus on their coupled magneto-mechanical response up to large strains and high magnetic fields. With the purpose of achieving a coupled characterization for the efficient design of MRE-based devices, this work encompasses the constitutive modeling of MREs. Based on the general theoretical framework for transversely isotropic magneto-elastic continua proposed by Kankanala and Triantafyllidis [1], we develop the coupled magneto-mechanical constitutive laws for both isotropic and anisotropic MREs in order to identify the corresponding constitutive model’s material parameters. The actual experimental characterization of MREs conducted thanks to a specially designed specimen and novel experimental setup allowing tensile tests up to large strains and under high magnetic fields is presented in P¨ossinger [3]. The experimental data thus obtained provide the constitutive models for the isotropic and anisotropic MREs needed as input for subsequent numerical simulations.

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