Field-Induced Pseudoplasticity of Magnetoactive Elastomers: A Phase Transition Interpretation

• Published in: IEEE magnetics letters Vol. 13; pp. 1 - 5
• Main Authors: Stolbov, Oleg, Raikher, Yuriy
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Elastomers; Ferromagnetism; field-induced plasticity; Magnetic field induced strain; Magnetic fields; magnetic shape memory effect; Magnetization; Magnetoacoustic effects; magnetoactive polymers; Magnetoelasticity; Mechanical analysis; Phase transitions; Pseudoplasticity; Soft magnetic materials; Stress
• ISSN: 1949-307X; 1949-3088
• DOI: 10.1109/LMAG.2021.3127071

In this letter, we present a new phenomenological model that on a unified basis accounts for the field/stress response of a magnetoactive elastomer that displays a so-called induced pseudoplasticity. The essence of the effect is that a composite with a sufficiently high content of the ferromagnet filler behaves elastically under zero/low field but, being subject to a stronger one, abruptly changes its mechanical response to plasticity. However, upon removing the field, the sample elasticity is restored. As a first try, a one-dimensional (1-D) variant of the model is developed. Its comparison with the results obtained in a series of mesoscopic numerical experiments performed with a quasi-1-D sample demonstrates fairly good agreement.