Abstract
Deformation of a thin cylindrical body with a magnetizable elastomer based on silicone in the magnetic field of an electromagnetic coil is investigated experimentally and theoretically. It is observed that a bistability of the thin body equilibrium shape exists at some values of the coil current. The method of measuring elasticity coefficients of the magnetizable elastomer in the Mooney – Rivlin model is proposed.
Highlights
A magnetizable elastomer (ME) is a composite material consisting of elastic basis and of ferromagnetic nano- or microparticles
In [6-7] the bistability of the ferrogel equilibrium shapes in a nonuniform magnetic field of an electromagnet is found experimentally
The possibility of bistable equilibrium shapes of the thin body with ME based on silicone in the magnetic field of an electromagnetic coil is found experimentally
Summary
A magnetizable elastomer (ME) is a composite material consisting of elastic basis and of ferromagnetic nano- or microparticles. The ME small deformation in the applied uniform magnetic field is studied in [1-4], where only one stable equilibrium shape is found theoretically. In [5] the deformation of spherical bodies with ME in a uniform magnetic field is studied experimentally, and a unique dependence of the body length on the applied magnetic field intensity is obtained. In [8-9] the possibility of bistable and of multistable equilibrium shapes of bodies with ME in different magnetic fields is shown theoretically. The possibility of bistable equilibrium shapes of the thin body with ME based on silicone (unlike the ferrogel in [6-7]) in the magnetic field of an electromagnetic coil is found experimentally. The method of measuring elasticity coefficients in the Mooney – Rivlin model is proposed. Bistability of the deformation is shown by numerical computations
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