Presentation Information
[3E02]The dynamics of a frictionally coupled system with many degrees of freedom
*Hiroshi Matsukawa1, Kanta Tsuneyoshi1, Samuel Poincloux1 (1. Department of Physics, Aoyama Gakuin University)
Friction plays an essential role in various systems with many degrees of freedom. In some systems, each element interacts with the others via frictional coupling. Here, we investigate a model of a frictionally coupled multi-layer system using both numerical and theoretical approaches. The system consists of several layers: the top layer is driven at a constant velocity, while the bottom layer is fixed. The intermediate layer interacts with one adjacent layer via friction and with the other via an elastic spring. This configuration represents a sheared system with many degrees of freedom. The system’s dynamical behavior strongly depends on the driving velocity and other parameters, and exhibits a variety of characteristic regimes. Roughly speaking, the shear velocity profile transitions from a discontinuous to a continuous form as the driving velocity increases. The transient dynamics and the underlying mechanisms of these diverse behaviors will be discussed.