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On existence and numerical approximation in phase-lag thermoelasticity with two temperatures

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Campo, Marco
Copetti, Maria
Fernández, Jose R.
Quintanilla de Latorre, RamónMés informacióMés informacióMés informació
Document typeArticle
Defense date2022-04
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
ProjectANALISIS MATEMATICO APLICADO A LA TERMOMECANICA (AEI-PID2019-105118GB-I00)
Abstract
In this work we study from both variational and numerical points of view a thermoelastic problem which appears in the dual-phase-lag theory with two temperatures. An existence and uniqueness result is proved in the general case of different Taylor approximations for the heat flux and the inductive temperature. Then, in order to provide the numerical analysis, we restrict ourselves to the case of second-order approximations of the heat flux and first-order approximations for the inductive temperature. First, variational formulation of the corresponding problem is derived and an energy decay property is proved. Then, a fully discrete scheme is introduced by using the finite element method for the approximation of the spatial variable and the implicit Euler scheme for the discretization of the time derivatives. A discrete stability
CitationCampo, M. [et al.]. On existence and numerical approximation in phase-lag thermoelasticity with two temperatures. "Discrete and continuous dynamical systems. Series B", Abril 2022, vol. 27, num. 4, p. 2221-2245. 
URIhttp://hdl.handle.net/2117/345198
DOI10.3934/dcdsb.2021130
ISSN1531-3492
Publisher versionhttps://www.aimsciences.org/article/doi/10.3934/dcdsb.2021130
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