2018 年 18 巻 1 号 p. 57-63
It is important both the design and the mechanical function of the tread pattern (groove) of automobile tires which referred to as the face of the tire. Currently, it is required to achieve of improvement from the viewpoint of both its mechanical function and design. In this study, in order to clarify the mechanical function of tire, the effect of the tread pattern on the strain, the maximum static friction force and the actual contact ratio is evaluated. Moreover, the relationship between the evaluated parameters and the maximum static friction force are discussed for considering the mechanical function of the tire. This paper describes not only the results of simultaneous measurement of strain and maximum static friction force by DIC method but also the measurement result of actual contact ratio using the transfer method.