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Thermoelastic theory with microtemperatures and dissipative thermodynamics

机译:微观温度与耗散热力学的热弹性理论

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摘要

In this article we derive a nonlinear theory of thermoelastic materials with microtemperatures based on the entropy balance of type III postulated by Green and Naghdi. The work is motivated by an increasing use of materials which possess thermal variation at a microstructure level such that both thermal and microtemperatures waves can propagate with finite speeds and energy dissipation. The equations of the linear theory are also obtained. Then, we use a semigroup approach to derive an existence and uniqueness result for the solutions to the anisotropic problem and to study the asymptotic behavior. Finally, we investigate the impossibility of the localization in time of solutions.
机译:在本文中,我们根据Green和Naghdi假设的III型熵平衡,推导出了具有微温度的热弹性材料的非线性理论。这项工作是由于越来越多地使用在微观结构水平上具有热变化的材料而引起的,因此热波和微温波都可以以有限的速度和能量传播。还获得了线性理论的方程。然后,我们使用半群方法导出各向异性问题解的存在性和唯一性结果,并研究渐近行为。最后,我们研究了在解决时间上本地化的可能性。

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