Time decay in dual-phase-lag thermoelasticity: Critical case

Zhuangyi Liu, Ramón Quintanilla

Research output: Research - peer-reviewArticle

Abstract

This note is devoted to the study of the time decay of the onedimensional dual-phase-lag thermoelasticity. In this theory two delay parameters τq and τθ are proposed. It is known that the system is exponentially stable if τq < 2τθ [22]. We here make two new contributions to this problem. First, we prove the polynomial stability in the case that τq = 2τθ as well the optimality of this decay rate. Second, we prove that the exponential stability remains true even if the inequality only holds in a proper sub-interval of the spatial domain, when τθ is spatially dependent.

LanguageEnglish (US)
Pages177-190
Number of pages14
JournalCommunications on Pure and Applied Analysis
Volume17
Issue number1
DOIs
StatePublished - Jan 1 2018

Fingerprint

Phase-lag
Thermoelasticity
Critical Case
Exponential Stability
Decay Rate
Optimality
Decay
Interval
Polynomial
Dependent
Asymptotic stability
Polynomials

Keywords

  • Exponential stability
  • Phase-lag
  • Polynomial stability
  • Thermoelasticity

Cite this

Time decay in dual-phase-lag thermoelasticity : Critical case. / Liu, Zhuangyi; Quintanilla, Ramón.

In: Communications on Pure and Applied Analysis, Vol. 17, No. 1, 01.01.2018, p. 177-190.

Research output: Research - peer-reviewArticle

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