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arXiv 1901.01423math.AP
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具有不同阻尼机制的热弹性板方程的Cauchy问题

Cauchy problem for thermoelastic plate equations with different damping mechanisms

Wenhui Chen

摘要:

本文研究了具有摩擦或结构阻尼的热弹性板方程在$\mathbb{R}^n$、$n\geq1$中的Cauchy问题,其中热传导由Fourier定律模拟。我们解释了一些定性性质的解决方案的影响,不同的阻尼机制。我们证明了模型中的阻尼对平滑效应、能量估计、$L^p-L^q$估计(共轭线上不需要)和扩散现象具有主导影响。此外,我们推导出的加权$L^1$数据的框架中的解决方案的渐近配置文件。特别是,急剧衰减估计的下界和上界的解决方案中的$\dot{H}^s$规范($s\geq0$)。

英文摘要:

In this paper we study Cauchy problem for thermoelastic plate equations with friction or structural damping in $\mathbb{R}^n$, $n\geq1$, where the heat conduction is modeled by Fourier's law. We explain some qualitative properties of solutions influenced by different damping mechanisms. We show which damping in the model has a dominant influence on smoothing effect, energy estimates, $L^p-L^q$ estimates not necessary on the conjugate line, and on diffusion phenomena. Moreover, we derive asymptotic profiles of solutions in a framework of weighted $L^1$ data. In particular, sharp decay estimates for lower bound and upper bound of solutions in the $\dot{H}^s$ norm ($s\geq0$) are shown.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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