Global existence and optimal decay rates for the Timoshenko system: The case of equal wave speeds

Naofumi Mori, Jiang Xu, Shuichi Kawashima

Research output: Contribution to journalArticle

15 Citations (Scopus)


We first show the global existence and optimal decay rates of solutions to the classical Timoshenko system in the framework of Besov spaces. Due to the non-symmetric dissipation, the general theory for dissipative hyperbolic systems (see [31]) cannot be applied to the Timoshenko system directly. In the case of equal wave speeds, we construct global solutions to the Cauchy problem pertaining to data in the spatially Besov spaces. Furthermore, the dissipative structure enables us to give a new decay framework which pays less attention on the traditional spectral analysis. Consequently, the optimal decay estimates of solution and its derivatives of fractional order are shown by time-weighted energy approaches in terms of low-frequency and high-frequency decompositions. As a by-product, the usual decay estimate of L1(R)-L2(R) type is also shown.

Original languageEnglish
Pages (from-to)1494-1518
Number of pages25
JournalJournal of Differential Equations
Issue number5
Publication statusPublished - 2015 Mar 5



  • Critical Besov spaces
  • Global existence
  • Optimal decay estimates
  • Timoshenko system

ASJC Scopus subject areas

  • Analysis
  • Applied Mathematics

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