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arXiv 2006.14949math.APmath.OC
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具有局部Kelvin-Voigt阻尼和界面非光滑系数的星形网络的稳定性

Stability of a star-shaped network with local Kelvin-Voigt damping and non-smooth coefficient at interface

Fathi Hassine

摘要:

本文研究了具有局部Kelvin-Voigt阻尼的弹性弦星形网络的稳定性问题。在假设阻尼系数在传递点附近具有奇异性的条件下,证明了系统所对应的半群是多项式稳定的,并且系统的衰减速率依赖于退化的速度.这一结果改进了Z.~ Liu和Q.~ Zhang在\cite{LZ}中提出的具有局部Kelvin-Voigt阻尼和界面非光滑系数的波动方程。

英文摘要:

In this paper, we study the stability problem of a star-shaped network of elastic strings with a local Kelvin-Voigt damping. Under the assumption that the damping coefficients have some singularities near the transmission point, we prove that the semigroup corresponding to the system is polynomially stable and the decay rates depends on the speed of the degeneracy. This result improves the decay rate of the semigroup associated to the system on an earlier result of Z.~Liu and Q.~Zhang in \cite{LZ} involving the wave equation with local Kelvin-Voigt damping and non-smooth coefficient at interface.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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