RIDE COMFORT EVALUATION USING REVISED ISO STANDARD 2631

摘要

Passengers traveling in vehicles running on uneven roads and tracks are subject to whole-body vibrations. Ride comfort is based on the subjective human perception of mechanical vertical vibrations due to randomly uneven guideways. Thus, for the ride comfort evaluation the global system consisting of the guideway, the vehicle suspension, the vehicle body and the passenger has to be modelled and dynamically analyzed. The state equations of the vehicle-guideway system and the human perception dynamics via ISO standards are presented as well as the covariance analysis of the resulting randomly excited global system. The ride comfort analysis is discussed for two vehicle models: a half-car and a full car. The results show a remarkable change in the ride comfort evaluation due to the revised standard ISO 2631.