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

对滑雪板滑行机理进行了研究，为滑雪技术的发展提供了科学依据。一个短模型滑雪（20厘米长）的静摩擦系数和动摩擦系数的温度和速度的依赖关系进行了观察与精心准备的雪的颗粒大小和表面硬度进行控制。结果表明，滑橇的滑动速度比真实的滑橇低，滑橇的摩擦机理可以用附着力的温度依赖性来解释，附着力的温度依赖性包含了液态冰层的影响，而冰的剪切力的温度依赖性则相反。显然，没有必要考虑雪板滑动的融水润滑理论，因为对于短模型雪板，在低温和低速下发生了与真实的雪板一样的低摩擦阻力。

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.