Two-field surface pattern control via marginally stable magnetorheological elastomers - Archive ouverte HAL Access content directly
Journal Articles Soft Matter Year : 2017

Two-field surface pattern control via marginally stable magnetorheological elastomers

Erato Psarra
  • Function : Author
Laurence Bodelot
Kostas Danas

Abstract

The stability and post-bifurcation of a non-linear magnetoelastic film/substrate block is experimentally exploited to obtain active control of surface roughness. The non-intuitive interplay between magnetic field and elastic deformation owes to material and geometry selection, namely a ferromagnetic particle composite film bonded on a compliant passive foundation. Cooperation of two otherwise independent loading mechanisms–mechanical pre-compression and magnetic field–allows to bring the structure near a marginally stable state and then destabilize it with either magnetic or mechanical fields. We demonstrate for the first time that the critical magnetic field is a decreasing function of pre-compression and vice versa. The experimental results are then probed successfully with full-field finite element simulations at large strains and magnetic fields. The magnetoelastic coupling allows for the reversible on/off control of surface wrinkling under adjustable critical magnetic and mechanical fields, thus this study constitutes a first step towards realistic active haptic and morphing devices.
Fichier principal
Vignette du fichier
PBD_film_exp_accepted.pdf (2.4 Mo) Télécharger le fichier
Sup_PBD_film_exp_accepted.pdf (1.64 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01627525 , version 1 (21-12-2017)

Identifiers

Cite

Erato Psarra, Laurence Bodelot, Kostas Danas. Two-field surface pattern control via marginally stable magnetorheological elastomers. Soft Matter, 2017, 13 (37), pp.6576 - 6584. ⟨10.1039/C7SM00996H⟩. ⟨hal-01627525⟩
162 View
266 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More