Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nonlinear Diffusion and Sliding Friction
Abstract In this paper, we discuss the relation between the collective diffusion constant Dc and the sliding friction $$\vec \eta$$ , two transport coefficients that are of central importance in different areas of surface science. In the linear regime, they are very simply related. However, in the nonlinear regime, the sliding friction is a more useful entity as it measures the dynamic response of an adsorbed layer under a large external driving force. Analytic considerations and numerical simulations are applied to study the nonlinear sliding friction for two distinct systems: boundary lubrication layers and flux vortex lattice in type II superconductors. The stick-slip behavior in macroscopic sliding motion and the peak effect in type II superconductors are explained in terms of dynamical phases and the transitions between them.
Nonlinear Diffusion and Sliding Friction
Abstract In this paper, we discuss the relation between the collective diffusion constant Dc and the sliding friction $$\vec \eta$$ , two transport coefficients that are of central importance in different areas of surface science. In the linear regime, they are very simply related. However, in the nonlinear regime, the sliding friction is a more useful entity as it measures the dynamic response of an adsorbed layer under a large external driving force. Analytic considerations and numerical simulations are applied to study the nonlinear sliding friction for two distinct systems: boundary lubrication layers and flux vortex lattice in type II superconductors. The stick-slip behavior in macroscopic sliding motion and the peak effect in type II superconductors are explained in terms of dynamical phases and the transitions between them.
Nonlinear Diffusion and Sliding Friction
Ying, S. C. (Autor:in) / Granato, E. (Autor:in) / Ala-Nissila, T. (Autor:in)
01.01.2001
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch