Eventual differentiability of a string with local Kelvin-Voigt damping

Kangsheng Liu, Zhuangyi Liu, Qiong Zhang*

*Corresponding author for this work

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Abstract

In this paper, we study a wave equation with local Kelvin-Voigt damping, which models one-dimensional wave propagation through two segments consisting of an elastic and a viscoelastic medium. Under the assumption that the damping coefficients change smoothly near the interface, we prove that the semigroup corresponding to the system is eventually differentiable.

Original languageEnglish
Pages (from-to)443-454
Number of pages12
JournalESAIM - Control, Optimisation and Calculus of Variations
Volume23
Issue number2
DOIs
Publication statusPublished - 1 Apr 2017

Keywords

  • Eventual differentiability of semigroup
  • Local Kelvin-Voigt damping
  • Semigroup

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Liu, K., Liu, Z., & Zhang, Q. (2017). Eventual differentiability of a string with local Kelvin-Voigt damping. ESAIM - Control, Optimisation and Calculus of Variations, 23(2), 443-454. https://doi.org/10.1051/cocv/2015055