Soft Suppression of Traveling Localized Vibrations in Medium-Length Thin Sandwich-Like Cylindrical Shells Containing Magnetorheological Layers via Nonstationary Magnetic Field
A medium length thin laminated cylindrical shell composed by embedding magnetorheological elastomers (MREs) between elastic layers is the subject of this investigation. Physical properties of MREs are assumed to be functions of the magnetic field induction. Differential equations with complex coefficients depending upon the magnetic field and based on experimental data for MREs are used as the governing ones. The shell is subjected to perturbations in their surface so that the initial displacements and velocities are localized in a neighborhood of some generatrix. The problem is to study the response of the MRE-based shell to the initial localized perturbations and the applied time-dependent magnetic field. The asymptotic solution of the initial boundary value problem for the governing equations is constructed by superimposing families of localized bending waves running in the circumferential direction. It is shown that applying the time-dependent magnetic field result in soft suppression of running waves.
KeywordsWave Packet Cylindrical Shell Applied Magnetic Field Elastic Layer Sandwich Beam
The research leading to these results has received funding from the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7/2007-2013/under REA grant agreement PIRSES-GA-2013-610547-TAMER.
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