Aging of the frictional properties induced by temperature variations
arXiv:1006.3257 · doi:10.1103/PhysRevE.82.056108
Abstract
The dry frictional contact between two solid surfaces is well-known to obey Coulomb friction laws. In particular, the static friction force resisting the relative lateral (tangential) motion of solid surfaces, initially at rest, is known to be proportional to the normal force and independent of the area of the macroscopic surfaces in contact. Experimentally, the static friction force has been observed to slightly depend on time. Such an aging phenomenon has been accounted for either by the creep of the material or by the condensation of water bridges at the microscopic contacts points. Studying a toy-model, we show that the small uncontrolled temperature changes of the system can also lead to a significant increase of the static friction force.
arXiv comment8 pages, 5 figures, final version, to appear in Phys. Rev. E
References in corpus (10)
- Solid Friction from stick-slip to pinning and aging
- Rheological aging and rejuvenation in solid friction contacts
- Packing grains by thermally cycling
- Mechanisms for slow strengthening in granular materials
- Creep motion of a granular pile induced by thermal cycling
- Records in a changing world
- Fluid flow at the interface between elastic solids with randomly rough surfaces
- Phase space diffusion and low temperature aging
- Non-Amontons behavior of friction in single contacts
- Entropic aging and extreme value statistics