The Prediction of Rubber Friction considering Road Characteristics

Abstract : This paper presents the hysteresis friction of a sliding elastomer on various types of surfaces. The hysteresis friction is calculated by means of an analytical model which considers the energy spent by the local deformation of the rubber due to surface asperities. By establishing the fractal character of the surfaces, the contribution to rubber friction of roughness at different length scales is accounted for. High resolution surface profilometer is used in order to calculate the main three surface descriptors and the minimal length scale that can contribute to hysteresis friction. The results show that this friction prediction can be used in order to characterize in an elegant manner the surface morphology of various surfaces and to quantify the friction coefficient of sliding rubber as a function of surface roughness, load and speed. Key words : Macro roughness(마크로 거칠기), Micro roughness(마이크로 거칠기), Rubber friction(고무 마찰), Fractal dimension(프랙탈 차원), Hysteresis(히스테리시스), HDCF(높이차 상관 함수), Self affine(자기 아파인)