AUTODYN7 프로그램의 Road Module 개발

The. prease description of a road surface. profile is essential. to analyze ride q~ijtY ~ to predict durability in vehicle cfesign.. This paper explains the J>asic theory of designing a road surface profile in a spatial domain. A single track power spectral density function is proposed to describe a road. surface profi,le, which is also applicable for multi-track vehicle response ~ysis. In this study, the classification based on the International Organization for Standardization(ISO) is used to classify the roughness of a road smface. The classification proposed by the Motor Industry Research AssociationCMIRA) and exponentional PSD function are also' verified.. A methodology is proposed to generate road roughness description with a limited external data. A small arpount of external curve data is combined with an internal PSD function. to generate road swface roughness in a spatial domain.