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Mathematics > Analysis of PDEs
Title: Well-posedness and strong attractors for a beam model with degenerate nonlocal strong damping
(Submitted on 1 Nov 2022 (v1), last revised 27 Apr 2023 (this version, v3))
Abstract: This paper is devoted to initial-boundary value problem of an extensible beam equation with degenerate nonlocal energy damping in $\Omega\subset\mathbb{R}^n$: $u_{tt}-\kappa\Delta u+\Delta^2u-\gamma(\Vert \Delta u\Vert^2+\Vert u_t\Vert^2)^q\Delta u_t+f(u)=0$. We prove the global existence and uniqueness of weak solutions, which gives a positive answer to an open question in [24]. Moreover, we establish the existence of a strong attractor for the corresponding weak solution semigroup, where the ``strong" means that the compactness and attractiveness of the attractor are in the topology of a stronger space $\mathcal{H}_{\frac{1}{q}}$.
Submission history
From: Senlin Yan [view email][v1] Tue, 1 Nov 2022 05:46:34 GMT (18kb)
[v2] Thu, 3 Nov 2022 10:24:07 GMT (21kb)
[v3] Thu, 27 Apr 2023 09:07:26 GMT (21kb)
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