Acta mathematica scientia,Series A ›› 2015, Vol. 35 ›› Issue (3): 618-633.

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Global Existence and Nonexistence of Solutions for A Class of Fourth Order Wave Equation with Nonlinear Damping and Source Terms

Di Huafei1, Shang Yadong1,2   

  1. 1. School of Mathematics and Information Science, Guangzhou University, Guangzhou 510006;
    2. Key Laboratory of Mathematics and Interdisciplinary Sciences of GuangdongHigher Education Institutes, Guangzhou University, Guangzhou 510006
  • Received:2014-01-20 Revised:2014-11-23 Online:2015-06-25 Published:2015-06-25

Abstract:

In this paper, we consider the initial boundary value problem of the fourth order wave equation with nonlinear damping and source terms. By the combination of Galerkin approximations, Potential well and Monotonicity-Compactness methods, the global existence of solutions is obtained with the least amount of a priori estimates. Moreover, we prove that there are solutions with negative initial energy that blow up in finite time.

Key words: Wave equation, Global existence, Blow up, Damping and source terms, Monotonicity-Compactness methods

CLC Number: 

  • O175.4
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