Unfied Physical Concept of Friction and Wear of Rubber Part 4: Inseparable Relationship between Stick-slip Motion, Abrasionpattern Formation and Wear of Rubber

Abstract

The author proposes the essential features of wear of rubber, where the rubber wear is related inseparably to abrasion pattern formation generated by stick-slip motion during frictional sliding of the rubber. Initial micro-cracks in this process are induced by the micro-vibration of high frequency, which grow up to the abrasion patterns accelerated by the stick-slip motion. Thus, the wear of the rubber is just understood to be the process of the formation and separation of ridges of the abrasion pattern. The author newly induces “Wear-abrasion pattern diagram”, where the rate of wear V 4 is connected directly to the distance between the abrasion patterns Dab with the equation, V 4 =k(Dab) n, n be - ing 1/3 at an early stage and 3.5 for a final steady stage of the wear, k a constant.