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 Mat. Zametki, 2006, Volume 79, Issue 4, Pages 522–545 (Mi mz2722)

Attractors of dissipative hyperbolic equations with singularly oscillating external forces

M. I. Vishik, V. V. Chepyzhov

Institute for Information Transmission Problems, Russian Academy of Sciences

Abstract: We study a uniform attractor $\mathscr A^\varepsilon$ for a dissipative wave equation in a bounded domain $\Omega\Subset\mathbb R^n$ under the assumption that the external force singularly oscillates in time; more precisely, it is of the form $g_0(x,t)+\varepsilon^{-\alpha}g_1(x,t/\varepsilon)$, $x\in\Omega$, $t\in\mathbb R$, where $\alpha>0$, $0<\varepsilon\leqslant1$. In $E=H_0^1\times L_2$, this equation has an absorbing set $B^\varepsilon$ estimated as $\|B^\varepsilon\|_E\leqslant C_1+C_2\varepsilon^{-\alpha}$ and, therefore, can increase without bound in the norm of $E$ as $\varepsilon\to0+$. Under certain additional constraints on the function $g_1(x,z)$, $x\in\Omega$, $z\in\mathbb R$, we prove that, for $0<\alpha\leqslant\alpha_0$, the global attractors $\mathscr A^\varepsilon$ of such an equation are bounded in $E$, i.e., $\|\mathscr A^\varepsilon\|_E\leqslant C_3$, $0<\varepsilon\leqslant1$.
Along with the original equation, we consider a “limiting” wave equation with external force $g_0(x,t)$ that also has a global attractor $\mathscr A^0$. For the case in which $g_0(x,t)=g_0(x)$ and the global attractor $\mathscr A^0$ of the limiting equation is exponential, it is established that, for $0<\alpha\leqslant\alpha_0$, the Hausdorff distance satisfies the estimate $\operatorname{dist}_E(\mathscr A^\varepsilon,\mathscr A^0)\leqslant C\varepsilon^{\eta(\alpha)}$, where $\eta(\alpha)>0$. For $\eta(\alpha)$ and $\alpha_0$, explicit formulas are given. We also study the nonautonomous case in which $g_0=g_0(x,t)$. It is assumed that sufficient conditions are satisfied for which the “limiting” nonautonomous equation has an exponential global attractor. In this case, we obtain upper bounds for the Hausdorff distance of the attractors $\mathscr A^\varepsilon$ from $\mathscr A^0$, similar to those given above.

DOI: https://doi.org/10.4213/mzm2722

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English version:
Mathematical Notes, 2006, 79:4, 483–504

Bibliographic databases:

UDC: 517.95

Citation: M. I. Vishik, V. V. Chepyzhov, “Attractors of dissipative hyperbolic equations with singularly oscillating external forces”, Mat. Zametki, 79:4 (2006), 522–545; Math. Notes, 79:4 (2006), 483–504

Citation in format AMSBIB
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• https://doi.org/10.4213/mzm2722
• http://mi.mathnet.ru/eng/mz/v79/i4/p522

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This publication is cited in the following articles:
1. Chepyzhov V. V., Pata V., Vishik M. I., “Averaging of nonautonomous damped wave equations with singularly oscillating external forces”, J. Math. Pures Appl. (9), 90:5 (2008), 469–491
2. Vishik M. I., Pata V., Chepyzhov V. V., “Time averaging of global attractors of nonautonomous wave equations with singularly oscillating external forces”, Dokl. Math., 78:2 (2008), 689–692
3. Yan X., “Dynamical Behaviour of Non-Autonomous 2D Navier–Stokes Equations with Singularly Oscillating External Force”, Dynam. Syst., 26:3 (2011), 245–260
4. Bekmaganbetov K.A., Chechkin G.A., Chepyzhov V.V., Goritsky A.Yu., “Homogenization of trajectory attractors of 3D Navier–Stokes system with randomly oscillating force”, Discret. Contin. Dyn. Syst., 37:5 (2017), 2375–2393
5. Chepyzhov V.V., Conti M., Pata V., “Averaging of Equations of Viscoelasticity With Singularly Oscillating External Forces”, J. Math. Pures Appl., 108:6 (2017), 841–868
6. Bekmaganbetov K.A., Chechkin G.A., Chepyzhov V.V., “Weak Convergence of Attractors of Reaction-Diffusion Systems With Randomly Oscillating Coefficients”, Appl. Anal., 98:1-2, SI (2019), 256–271
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