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Doctoral Thesis
DOI
https://doi.org/10.11606/T.55.2013.tde-25102013-154517
Document
Author
Full name
Alisson Rafael Aguiar Barbosa
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2013
Supervisor
Committee
Fu, Ma To (President)
Carbinatto, Maria do Carmo
Cavalcanti, Marcelo Moreira
Charão, Ruy Coimbra
Fatori, Luci Harue
Title in Portuguese
Dinâmica assintótica de um sistema de placas termoelásticas do tipo hiperbólico
Keywords in Portuguese
Atrator global
Atratores exponenciais
Calor do tipo não-Fourier
Equações diferenciais parciais
Placas estensíveis
Termoelasticidade
Abstract in Portuguese
Este trabalho é dedicado ao estudo do comportamento a longo prazo de uma equação de placas extensíveis acoplada a uma equação de calor do tipo hiperbólico. O problema corresponde a um modelo de termo-elasticidade baseado em teorias de calor do tipo não-Fourier. Considerando que efeitos de inércia de rotação estão presentes no modelo, mostramos que o efeito dissipativo do calor e suficiente para estabilizar exponencialmente o sistema, sem dissipações adicionais. Além disso, provamos que o sistema possui um atrator global de dimensão fractal finita e também atratores exponenciais. Nossos resultados generalizam e complementam diversos trabalhos existentes
Title in English
Asymptotic dynamics of a system of the type plates termoelastics hyperbolic
Keywords in English
Exponential attractors
Extensible plates
Global attractor
Heat of non-Fourier
Partial differential equations
Thermal memory
Thermoelasticity
Abstract in English
This work is concerned with long-time dynamics of solutions of extensible plate equations with thermal memory. It corresponds to a model of thermoelasticity based on a theory of non-Fourier heat flux. By considering the case where rotational inertia is present we show that the thermal dissipation is sufficient to stabilize the system exponentially and guarantee the existence of a finite-dimensional global attractor. In addition the existence of an exponential attractor and some further properties are also considered. Our results complements several existing results
 
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AllissonRafael_rev.pdf (677.71 Kbytes)
Publishing Date
2013-10-25
 
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