Acta mathematica scientia,Series A ›› 2018, Vol. 38 ›› Issue (3): 527-542.

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On Convexity for Energy Decay Rates of the Second-Order Evolution Equation with Memory and Time-Varying Delay

Liu Gongwei1, Diao Lin2   

  1. 1 College of Science, Henan University of Technology, Zhengzhou 450001;
    2 College of Computer Science and Technology, Shangqiu University, Henan Shangqiu 476000
  • Received:2016-07-14 Revised:2017-08-28 Online:2018-06-26 Published:2018-06-26

Abstract: In this paper, we consider the following abstract evolution equation with memory and time-varying delay of the form#br#utt(t) + Au(t)-∫0t g(t-s)Au(s)ds + μ1h1(ut(t)) + μ2h2(ut(x, t-τ(t)))=▽F(u(t)).#br#By introducing suitable energy and Lyapunov functionals, and making use of some properties of the convex functions, we establish decay estimate for the energy, which depends on the behavior of h1 and the relaxation g. The decay estimate can be applied to various concrete models. We shall also give some applications to illustrate our result.

Key words: Second order evolution, Energy decay, Delay, Memory

CLC Number: 

  • O175.2
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