EFFECT OF ROAD PROFILE ON SPEED DEPENDENCE OF TIRE/ROAD ROLLING RESISTANCE

Abstract

 In this study, rolling resistance was subdivided and analyzed to clarify the effect of road profile on rolling resistance. In the study, the rolling resistance coefficient was calculated for each 1-m section, and the relationship between the resistance and the traveling speed and the road surface profile was examined. As a result, it was considered that drag generated when the tire passed on a road surface having a certain characteristic, as well as the air resistance, was one of the factors. For this verification, we attempted to detect the characteristic shape that the rolling resistance increases by the method using the lifting scheme of wavelet analysis. As a result, the detection points and the points where the rolling resistance increased were almost the same position. As a result of the above verification, it was confirmed that the characteristic road surface shape affects rolling resistance and is one of the factors that influence speed dependence.