Abstract
In this paper we study the stability problem of a tree of elastic strings with local Kelvin–Voigt damping on some of the edges. Under the compatibility condition of displacement and strain and continuity condition of damping coefficients at the vertices of the tree, exponential/polynomial stability are proved. Our results generalize the case of single elastic string with local Kelvin–Voigt damping in Liu and Rao (Z. Angew Math Phys 56:630–644, 2005), Liu and Liu (Z. Angew Math Phys 53:265–280, 2002).
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Communicated by Abdelaziz Rhandi.
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Ammari, K., Liu, Z. & Shel, F. Stability of the wave equations on a tree with local Kelvin–Voigt damping. Semigroup Forum 100, 364–382 (2020). https://doi.org/10.1007/s00233-019-10064-7
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DOI: https://doi.org/10.1007/s00233-019-10064-7