Open AccessField-induced interactions in magneto-active elastomers - A comparison of experiments and simulations
Author(s) -
Philipp Metsch,
Henrik Schmidt,
Dirk Sindersberger,
Karl A. Kalina,
Jörg Brummund,
Günter K. Auernhammer,
Gareth J. Monkman,
Markus Kästner
Publication year - 2020
Publication title -
smart materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.898
H-Index - 154
eISSN - 1361-665X
pISSN - 0964-1726
DOI - 10.1088/1361-665x/ab92dc
Subject(s) - elastomer , magneto , materials science , finite element method , deformation (meteorology) , particle (ecology) , magnetic field , particle system , mechanics , field (mathematics) , matrix (chemical analysis) , statistical physics , physics , computer science , mechanical engineering , composite material , engineering , mathematics , thermodynamics , magnet , oceanography , quantum mechanics , pure mathematics , operating system , geology
In this contribution, field-induced interactions of magnetizable particles embedded into a soft elastomer matrix are analyzed with regard to the resulting mechanical deformations. By comparing experiments for two-, three- and four-particle systems with the results of finite element simulations, a fully coupled continuum model for magneto-active elastomers is validated with the help of real data for the first time. The model under consideration permits the investigation of magneto-active elastomers with arbitrary particle distances, shapes and volume fractions as well as magnetic and mechanical properties of the individual constituents. It thus represents a basis for future studies on more complex, realistic systems. Our results show a very good agreement between experiments and numerical simulations—the deformation behavior of all systems is captured by the model qualitatively as well as quantitatively. Within a sensitivity analysis, the influence of the initial particle positions on the systems’ response is examined. Furthermore, a comparison of the full three-dimensional model with the often used, simplified two-dimensional approach shows the typical overestimation of resulting interactions in magneto-active elastomers.