Results 281 to 290 of about 285,969 (330)

Constitutive equation for friction with transition from static to kinetic friction and recovery of static friction

International Journal of Plasticity, 2008
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Shingo Ozaki
exaly   +2 more sources

Static friction of automotive friction materials

Wear, 1975
The static friction characteristics of filled phenolic resins against gray cast iron were investigated as a function of normal load, P, and temperature, T. A previous study [1, 2] of dynamic friction of filled phenolic resins revealed that these materials do not obey the Amontons law, F = μP, but a power function of the normal load (P) and the sliding ...
W.R. Tarr, S.K. Rhee
openaire   +1 more source

Forms of Static Friction, Sliding Friction and Rolling Friction

World Tribology Congress III, Volume 1, 2005
Although, it seems that the concepts of static friction, sliding friction and rolling friction are common knowledges, their real sources are ironically not so clear. Inappropriate descriptions of them may have hampered the theoretical analyses and calculations of the frictions and deterred their applications in real world.
Y. Xu, K. L. Yung
openaire   +1 more source

Static Friction

Journal of Fluids Engineering, 1943
Abstract A new machine is described by means of which static friction between contacting surfaces separated by lubricating films of thickness approaching molecular dimensions can be measured with considerable precision. In a test run, a number of spot determinations of the static coefficient are made at closely spaced points over a short
openaire   +1 more source

Thermal effects in static friction: Thermolubricity

Physical Review E, 2008
We present a molecular dynamics analysis of the static friction between two thick slabs. The upper block is formed by N2 molecules and the lower block by Pb atoms. We study the effects of the temperature as well as the effects produced by the structure of the surface of the lower block on the static friction.
FRANCHINI, Anna, BORTOLANI, Virginio, SANTORO, Giorgio, BRIGAZZI, Marco   +3 more
openaire   +2 more sources

Static Friction and the Law of Rubber Friction

Rubber Chemistry and Technology, 1963
Abstract a) The true static friction of vulcanized rubber is in practice immeasurably small (equal to zero, according to theory). b) The static friction as usually determined is an initial friction force. c) The initial friction force is equal to the sliding friction force in accelerated movement.
openaire   +1 more source

The nature of static friction

Journal of the Franklin Institute, 1942
Abstract The factors concerned in friction are discussed, together with a review of the limitations of the various approaches heretofore used. A more satisfactory view of the basic cause of static friction is developed in relation to modern experimental knowledge by considering the pertinent factors in systems having ideal surfaces, then relating ...
Walter Claypoole, Donald B. Cook
openaire   +1 more source

On the nature of the static friction, kinetic friction and creep

Wear, 2003
Abstract In this paper, we discuss the nature of the static and kinetic friction, and of (thermally activated) creep. We focus on boundary lubrication at high confining pressure (∼1 GPa), as is typical for hard solids, where one or at most two layers of confined molecules separates the sliding surfaces.
B.N.J. Persson, O. Albohr, F. Mancosu, V. Peveri, V.N. Samoilov, I.M. Sivebaek   +5 more
openaire   +1 more source

Adsorbed Layers and the Origin of Static Friction

Science, 1999
Analytic results and experiments in ultrahigh vacuum indicate that the static friction between two clean crystalline surfaces should almost always vanish, yet macroscopic objects always exhibit static friction. A simple and general explanation for the prevalence of static friction is proposed. “Third bodies,” such as small hydrocarbon molecules, adsorb
, He, , Muser, , Robbins
openaire   +2 more sources