Electronic Journal of Differential Equations,
Vol. 2013 (2013), No. 115, pp. 1-8.

Title: Blow-up of solutions for a nonlinear wave equation with
       nonnegative initial energy
        
Authors: Wenjun Liu (Nanjing Univ., Nanjing 210044, China)
         Yun Sun    (Nanjing Univ., Nanjing 210044, China)
         Gang Li    (Nanjing Univ., Nanjing 210044, China)

Abstract:
 In this article, we study a wave equation with nonlinear
 boundary damping  and interior source term. We prove two
 blow-up results with nonnegative initial energy; thus we extend
 the blow-up results by Feng et al [5].

Submitted January 18, 2013. Published May 06, 2013.
Math Subject Classifications: 35B44, 35L10, 35L71.
Key Words: Boundary damping term; interior source term;
           nonlinear wave equation; nonnegative initial energy.