Abstract—From the previous study, it is found that the spring-back of plate in a press forming can be reduced by changing the friction property of the plate and die in a press process. In the present study, the friction property of the die surface is varied by machining a micro-pattern on the surface. However, it is very hard to conduct the experiment for all combinations of different shapes of pattern and the number of the pattern per area. Hence, it is desired to estimate the friction property using a numerical simulation. In the present paper, a three-dimensional contact analysis is carried out for a circular micro-pattern and various contact conditions, an apparent friction coefficient of the plate with the pattern will be estimated through the comparison of experiment and numerical simulation. It will be shown that the friction coefficient can be evaluated using the numerical simulation.

Index Terms—Micro-pattern, contact simulation

Cite: Hideo Koguchi and Takayoshi Tanaka, "Friction Properties of Surface with Circular Micro-patterns," International Journal of Mechanical Engineering and Robotics Research, Vol. 6, No. 4, pp. 285-289, July 2017. DOI: 10.18178/ijmerr.6.4.285-289