Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
752718 | Systems & Control Letters | 2009 | 8 Pages |
Abstract
We consider the existence of global solutions of the nonlinear elastodynamic system with a locally distributed damping in a bounded domain. We assume that the energy function satisfies the strong ellipticity condition at the zero equilibrium. The local dissipation is in the form a(x)u̇ where the nonnegative function a(x)a(x) is only positive on a small portion of the domain. We show the existence of global smooth solutions when initial data are small. In particular, we obtain the exponential decay of the energy, which implies the exponential stabilization of the system by internal feedback.
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Physical Sciences and Engineering
Engineering
Control and Systems Engineering
Authors
Zhi-Fei Zhang, Peng-Fei Yao,