Modern Understanding of the Frictional Mechanisms
Scientific Report at NAS Presidium Meeting 24 October 2012
DOI:
https://doi.org/10.15407/visn2012.12.012Keywords:
friction mechanism, molecular dynamics simulation, self-healing cracks, frictional interfaceAbstract
Friction is one of the oldest physical problems of great practical importance; despite of this, a full understanding of the problem is still lacking. The talk is devoted to recent theoretical studies of the physics of friction. First, the results of molecular dynamics simulations are considered, which clarify microscopic mechanisms of motion of a thin lubricant film. Then, the master equation approach to friction on the mesoscopic scale is discussed. Generalizations of this approach in order to incorporate the interaction between the contacts (asperities), the soliton-like propagation of self-healing cracks in the frictional interface, and the role of substrate deformations at the onset of sliding which leads to appearance of precursors, are considered.
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