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衰退記憶型無阻尼吊橋方程的時(shí)間依賴?yán)匚?/h1>
2023-04-29 00:44:03白京汪璇

白京 汪璇

摘要: 基于時(shí)間依賴空間上的過程理論,考慮帶有衰退記憶的無阻尼吊橋方程解的長時(shí)間動(dòng)力學(xué)行為. 首先,利用Faedo-Galerkin逼近法得到解的適定性; 其次,利用能量估計(jì)得到該非自治動(dòng)力系統(tǒng)在相應(yīng)解空間中存在拉回吸收集; 最后,利用收縮函數(shù)方法和共圈技術(shù)證明時(shí)間依賴?yán)匚拥拇嬖谛?

關(guān)鍵詞: 吊橋方程; 拉回吸收集; 時(shí)間依賴?yán)匚? 衰退記憶

中圖分類號(hào): O175.29? 文獻(xiàn)標(biāo)志碼: A? 文章編號(hào): 1671-5489(2023)02-0189-14

Time-Dependent Pullback Attractors for? Non-damping Suspension Bridge Equation with Fading Memory

BAI Jing,WANG Xuan

(College of Mathematics and Statistics,Northwest Normal University,Lanzhou 730070,China)

Abstract: Based on the process theory in time-dependent space,we considered the long-time dynamic behavior of the solution for the non-damping suspension bridge equation with

fading memory. Firstly,we obtained well-posedness of solution by using Faedo-Galerkin approximation method. Secondly,the non-autonomous dynamical system

had pullback absorb set in the corresponding solution space was obtained by using energy estimation. Finally, we proved the existence of time-dependent pullback attractors

by using? the? contraction function method and cocyclic technique.

Keywords: suspension bridge equation; pullback absorb set; time-dependent pullback attractor; fading memory

收稿日期: 2022-06-27.

第一作者簡介: 白 京(1996—),女,漢族,碩士研究生,從事無窮維動(dòng)力系統(tǒng)的研究,E-mail: 2151659216@qq.com.

通信作者簡介: 汪 璇(1973—),女,漢族,博士,教授,從事非線性微分方程和無窮維動(dòng)力系統(tǒng)的研究,E-mail: wangxuan@nwnu.edu.cn.

基金項(xiàng)目: 國家自然科學(xué)基金(批準(zhǔn)號(hào): 12061062; 11961059).

參考文獻(xiàn)

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[10] 劉世芳,馬巧珍. 具有歷史記憶的阻尼吊橋方程強(qiáng)全局吸引子的存在性 [J]. 數(shù)學(xué)物理學(xué)報(bào),2017,37A(4): 684-697. (LIU S F,MA Q Z. Existe

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[11] 劉亭亭,馬巧珍. 非自治Plate方程時(shí)間依賴強(qiáng)拉回吸引子的存在性[J]. 數(shù)學(xué)年刊,2017,38A(2):? 125-144. (LIU T T,MA Q Z. The Existence of

Time-Dependent Strong Pullback Attractors for Non-autonmous Plate Equations [J]. Chinese Annals of Mathematics,2017,38A(2): 125-144.)

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tractor for Extensible Berger Equation [J]. J Math Anal Appl,2019,469(2): 1045-1069.

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utonomous Degenerate Kirchhoff Equations with Strong Damping [J/OL]. Adv Math Phys,(2021-12-20)[2022-06-17]. https://doi.org/10.1155/2021/7575078.

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e-Dependent Spaces and Applications [Z/OL]. (2022-01-10)[2022-06-17]. https://arxiv.org/pdf/2201.0324/v1.pdf.

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(責(zé)任編輯: 趙立芹)

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