Study of Ski Sliding Resistance Depending upon Snow Temperature and Sliding Velocity

对滑雪板滑动机理进行了研究，为滑雪板技术提供了科学依据。在控制颗粒大小和表面硬度的条件下，观察了20 cm短板模型滑雪板静摩擦系数和动摩擦系数与温度和速度的关系。结果表明，在较实际滑雪板低的滑动速度条件下，滑雪板滑动摩擦的机理可以用包含冰的液态层作用的黏附力的温度依赖性和冰的剪切力的相反温度依赖性来解释。很明显，没有必要考虑滑雪板滑动的融水润滑理论，因为短模型滑雪板的低摩擦阻力与真实滑雪板一样是在低温低速下发生的。

The ski sliding mechanism was studied to give the scientific base for the ski technology. Temperature and velocity dependence of static and kinetic frictional coefficients of a short model ski (20 cm length) were observed with well prepared snows which particle sizes and surface hardness were controlled. As the result, the observation were done for the low sliding velocity than real ski, the mechanism of ski sliding friction is explained by means of the temperature dependence of the adhesion force which contains the effect of the liquid-like layer of ice and the opposite temperature dependence of the shear force of ice. It is clear that there is no necessary to think about the melt-water lubrication theory for ski sliding because the low frictional resistance like real skis was taken place at low temperature and low velocity for the short model ski.