Kinetic ice friction coefficients

Despite significant simplification of the speedskate ice friction problem, FAST 1.0 is able to predict kinetic ice friction coefficients that are consistent with the published measurements of de Koning et al., with an error of about 20% or less. 

Under conditions typical of competitive speedskating, frictional melting, squeeze flow and heat conduction into the ice all play an important role in determining skate blade lubrication. Pressure-induced freezing point depression and the quasi-liquid layer are accounted for in the model, but they play only a minor role in determining the kinetic ice friction coefficient. 

Because of the complex nature of the temperature and velocity dependence of the kinetic ice friction coefficient, it is important to measure ice friction under conditions that are as close as possible to those where the data will be applied. It is inadvisable to apply or extrapolate measurements and inferences made at low velocities to skating at much higher velocities. 

Figure 4 Effect of ice temperature and skating velocity on coefficient of kinetic ice friction...

Table 2.1 Kinetic friction coefficient of polymers (counter part ice (-t), silica glass (++) or steel (elsewhere), p - contact pressure, v - speed of relative lateral motion, - counterface roughness ( substrate roughness), applied normal load in N, RT - room temperature.

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