Abstract
In this paper, by applying analytical method and using experimental method data, the effect of sliding velocity on friction coefficient for contact of copper with copper is investigated. Some equations for obtaining friction coefficient as a function of sliding velocity for contact of copper with copper by applying second analytical method and using experimental method data are achieved. The results have shown, for each duration of rubbing, the existence of an exclusive equation for friction coefficient. The friction coefficient functions that are achieved by second analytical method are shown as a curve that indicates specific friction coefficient for each sliding velocity. Friction coefficient can be used to obtain friction force and stress in contact region of materials. In order to have a suitable design, the amounts of stress and friction force in contact region are required.
Highlights
It seems that friction is an undeniable phenomenon in contacting materials
The results have shown, for each duration of rubbing, the existence of an exclusive equation for friction coefficient
The results achieved by second analytical method have shown increase of friction coefficient with increasing the sliding velocity, but this increasing may change into decreasing in higher numerical values of sliding velocities and is not constant at all
Summary
It seems that friction is an undeniable phenomenon in contacting materials. So in this paper, by obtaining friction coefficient equations as a function of sliding velocity, the effect of sliding velocity on friction coefficient is investigated. By applying two kinds of analytical method and using experimental method data, the effect of sliding velocity on friction coefficient for contact of copper with copper is investigated. As it is shown, friction coefficient in contact of copper with copper at different sliding velocities and different duration of rubbings are shown. The numerical values of minimum and maximum friction coefficient for contact of copper with copper that are indicated, are respectively, μs = 0 and μm = 0.153 These data are used in both analytical methods to obtain the numerical value of friction coefficient while the sliding velocity is changing [5].
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