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arXiv 1012.4749math.AP
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一类奇异非自治板方程的拉回吸引子

Pullback attractors for a singularly nonautonomous plate equation

Vera Lúcia Carbone, Marcelo José Dias Nascimento, Karina Schiabel-Silva, Ricardo Parreira da Silva

摘要:

本文考虑了有界区域$Ω\subset \R^n$中具有结构阻尼的奇异非自治板方程族\[ u_{tt} + a(t,x)u_{t} + (- Δ) u_{t} + (-Δ)^{2} u + λu = f(u), \],其边界条件为Navier边界条件.当非线性$f$是耗散的,我们证明了这个问题在$H^2_0(Ω) \times L^2(Ω)$中是全局适定的,并且在阻尼$a$的小扰动下有一族上连续的拉回吸引子.

英文摘要:

We consider the family of singularly nonautonomous plate equation with structural damping \[ u_{tt} + a(t,x)u_{t} + (- Δ) u_{t} + (-Δ)^{2} u + λu = f(u), \] in a bounded domain $Ω\subset \R^n$, with Navier boundary conditions. When the nonlinearity $f$ is dissipative we show that this problem is globally well posed in $H^2_0(Ω) \times L^2(Ω)$ and has a family of pullback attractors which is upper-semicontinuous under small perturbations of the damping $a$.

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