AVS 47th International Symposium
    Surface Science Thursday Sessions
       Session SS2+NS-ThA

Invited Paper SS2+NS-ThA1
Friction at High Speeds@footnote 1@

Thursday, October 5, 2000, 2:00 pm, Room 209

Session: Tribology and Adhesion
Presenter: J.E. Hammerberg, Los Alamos National Laboratory
Authors: J.E. Hammerberg, Los Alamos National Laboratory
T.C. Germann, Los Alamos National Laboratory
B.L. Holian, Los Alamos National Laboratory
P.S. Lomdahl, Los Alamos National Laboratory
Correspondent: Click to Email
The mechanisms of dissipation at dry sliding metal-metal interfaces are complex, nonlinear, and involve a range of length and time scales. Depending upon the magnitude of the relative sliding velocity and the material pressure, phenomena described by phonons, dislocation generation and dynamics, microstructure formation, and mechanical mixing of materials are important. We discuss the variety of these phenomena as seen in extensive very large-scale molecular dynamics simulations for copper and Lennard-Jones systems in two and three dimensions. These simulations suggest universal behavior at large sliding speeds and we discuss some of the theoretical descriptions of these phenomena and recent high speed experimental results. @FootnoteText@ @footnote 1@Work performed under auspices of U.S. DOE at LANL under contract W-7405-Eng-36.