Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 07, 2017 - October 09, 2017
An adhesion is one of essence for rubber friction because magnitude of friction force is result in magnitude of adhesion on a real contact area. However, the real contact area during sliding depends on a state and history of contact surface. Therefore, rubber friction sometimes shows the rate- and pressure-dependency. To rationally describe rubber friction and to simulate using FEM, in this study, we formulate the rate- and pressure-dependent friction model based on the elastoplastic theory. Concretely, we adopt a nonlinear sliding surface (frictional criterion), and prescribe several evolution laws for internal state variables. Then, in 2nd report, we demonstrate the mechanical response of proposed friction model. And its validity is verified by comparing with experiments between a rough PDMS and smooth PMMA contact surface.
