Response of vehicle accelerating over random profile

Abstract

Certain aspects of the complex dependence on parameters of the non-stationary random response of a simple model of a vehicle to road roughness are investigated numerically. Although the method is applicable to an arbitrarily varying traversal velocity, attention has been restricted to uniformly accelerated motion. The mean square velocity response is found to be strongly dependent on acceleration and relatively independent of road roughness spectral density at low wave-numbers. The fact that the non-stationary displacement response is independent of acceleration would thus seem to be an exceptional case, since the mean square acceleration response is known to depend markedly on acceleration.