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- W3185693686 abstract "<p style='text-indent:20px;'>The Jordan–Moore–Gibson–Thompson (JMGT) equation is a well-established and recently widely studied model for nonlinear acoustics (NLA). It is a third–order (in time) semilinear Partial Differential Equation (PDE) with a distinctive feature of predicting the propagation of ultrasound waves at <i>finite</i> speed. This is due to the heat phenomenon known as <i>second sound</i> which leads to hyperbolic heat-wave propagation. In this paper, we consider the problem in the so called critical case, where free dynamics is unstable. In order to stabilize, we shall use boundary feedback controls supported on a portion of the boundary only. Since the remaining part of the boundary is not controlled, and the imposed boundary conditions of Neumann type fail to saitsfy Lopatinski condition, several mathematical issues typical for mixed problems within the context o boundary stabilizability arise. To resolve these, special geometric constructs along with sharp trace estimates will be developed. The imposed geometric conditions are motivated by the geometry that is suitable for modeling the problem of controlling (from the boundary) the acoustic pressure involved in medical treatments such as lithotripsy, thermotherapy, sonochemistry, or any other procedure involving High Intensity Focused Ultrasound (HIFU).</p>" @default.
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- W3185693686 date "2022-01-01" @default.
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- W3185693686 title "Boundary stabilization of the linear MGT equation with partially absorbing boundary data and degenerate viscoelasticity" @default.
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- W3185693686 doi "https://doi.org/10.3934/dcdss.2022020" @default.
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