Investigation of the equivalent representation form of strongly damped nonlinear oscillators by a nonlinear transformation approach

We use a nonlinear transformation method to develop equivalent equations of motion of nonlinear homogeneous oscillatory systems with linear and nonlinear odd damping terms. we illustrate the applicability of our approach by using the equations of motion that arise in many engineering problems and compare their amplitude-time curves with those obtained by the numerical integration solutions of the original equations of motion. © 2013 alex elías- zúñiga and oscar martínez-romero.