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arXiv · 1810.02931

On a Kelvin-Voigt Viscoelastic Wave Equation with Strong Delay

Andrii Anikushyn·Anna Demchenko·Michael Pokojovy
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Abstract

An initial-boundary value problem for a viscoelastic wave equation subject to a strong time-localized delay in a Kelvin & Voigt-type material law is considered. Transforming the equation to an abstract Cauchy problem on the extended phase space, a global well-posedness theory is established using the operator semigroup theory both in Sobolev-valued $C^{0}$- and BV-spaces. Under appropriate assumptions on the coefficients, a global exponential decay rate is obtained and the stability region in the parameter space is further explored using the Lyapunov's indirect method. The singular limit $τ\to 0$ is further studied with the aid of the energy method. Finally, a numerical example from a real-world application in biomechanics is presented.

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Andrii Anikushyn, Anna Demchenko, Michael Pokojovy. 2018-10-06. On a Kelvin-Voigt Viscoelastic Wave Equation with Strong Delay. https://arxiv.org/abs/1810.02931

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