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Impulse absorption by horizontal magnetic granular chain
16.L.D. Landau and E.M. Lifshitz, Theory of Continuum Media (Pergamon, Oxford, 1970).
19.M. Abraham and R. Becker, Classical Electricity and Magnetism (Blackie & Sons Ltd, London, 1954).
21.V.F. Nesterenko, Dynamics of Heterogeneous Materials (Springer-Verlag, New York, N. Y, 2001).
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The granular medium is known as a protecting material for shock mitigation. We study the impulse absorption of an alignment of magnetic spheres placed horizontally under a non-uniform magnetic field. The phenomenon of the wave dispersion is presented. This system can absorb 85% ∼ 95% (88% ∼ 98%) of the incident peak force (energy) under the applied magnetic field strength in 0.1 T ∼ 1.0 T. The shock attenuation capacities are enhanced by the increment of field strength. With an intelligent control system, it is conceivable that the magnetic granular chain may offer possibilities in developing adaptive shock protectors.
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