Wrinkling to crinkling transitions and curvature localization in a magnetoelastic film bonded to a non-magnetic substrate - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the Mechanics and Physics of Solids Année : 2019

Wrinkling to crinkling transitions and curvature localization in a magnetoelastic film bonded to a non-magnetic substrate

E. Psarra
  • Fonction : Auteur
Kostas Danas

Résumé

This work studies experimentally and numerically the post-bifurcation response of a magnetorheological elastomer (MRE) film bonded to a soft non-magnetic (passive) substrate. The film-substrate system is subjected to a combination of an axial mechanical pre-compression and a transverse magnetic field. The non-trivial interaction of the two fields leads to a decrease of the critical magnetic field with applied pre-compression, while the observed wrinkling patterns evolve into crinkles, a bifurcation mode that is defined by the accompanied curvature localization and strong shearing of the side faces of the wrinkled geometry. Using a magneto-elastic variational formulation in a two-dimensional finite element numerical setting, we find that the crinkling is an intrinsic feature of magnetoelasticity and its presence is directly associated with the repulsive magnetic forces of the neighboring wrinkled-crinkled faces. As a result, the presence of the magnetic field prohibits the formation of creases and folds. In an effort to obtain a good quantitative agreement between the numerical and the experimental results, we also introduce an approximate way to model the friction of the lateral film-substrate faces. This analysis reveals the strong effects of friction upon the magneto-mechanical wrinkling modes.
Fichier principal
Vignette du fichier
PBD_Crinkling_accepted.pdf (4.42 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02321677 , version 1 (21-10-2019)

Identifiants

Citer

E. Psarra, L. Bodelot, Kostas Danas. Wrinkling to crinkling transitions and curvature localization in a magnetoelastic film bonded to a non-magnetic substrate. Journal of the Mechanics and Physics of Solids, 2019, 133, pp.103734. ⟨10.1016/j.jmps.2019.103734⟩. ⟨hal-02321677⟩
1420 Consultations
169 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More