Asymptotic integration of systems of two wave equations with small parameter

Abstract

In this article we consider a hyperbolic system of two weakly nonlinear equations. Coefficients of the equations and initial conditions are periodical functions of the space variable. A multi-scale perturbation technique and integrating along characteristics are used to construct asymptotic series without secular members. The scheme of asymptotic integration is applied to analysis of oscillations of nonlinear non-homogeneous strings.

Keywords

• asymptotic solutions
• averaging
• wave equation
• resonances