Existence, Asymptotic Behaviour, and Blow up of Solutions for a Class of Nonlinear Wave Equations with Dissipative and Dispersive Terms

We consider the existence, both locally and globally in time, the asymptotic behaviour, and the blow up of solutions to the initial boundary value problem for a class of nonlinear wave equations with dissipative and dispersive terms. Under rather mild conditions on the nonlinear term and the initial data we prove that the above-mentioned problem admits a Unique local solution, which call be continued to I global solution, and the solution decays exponentially to zero as t -> + infinity. Finally, under a suitable condition oil the nonlinear term, we prove that the local solutions with negative and nonnegative initial energy blow up in finite time.