ICE FRICTION DURING SPEED SKATING
ICE FRICTION DURING SPEED SKATING
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DOI：
10.1016/0021-9290(92)90099-m
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发表时间：
1992-06-01
影响因子：
2.4
通讯作者：
SCHENAU, GJV
中科院分区：
文献类型：
--
作者：
DEKONING, JJ;DEGROOT, G;SCHENAU, GJV
在速度滑冰期间，运动员输出的外部动力主要用于克服空气和冰的摩擦力。研制了专用冰刀，并用于实际速度滑冰中的冰面摩擦力测量，直道和弯道的平均摩擦系数分别为0.0046和0.0059。冰摩擦系数的最小值是在冰表面温度约为-7 ℃时测得的。结果发现，摩擦系数随着速度的增加而增加，在文献中，有人认为，相对较低的摩擦力在滑冰的结果从一个液态水在冰面上的薄膜。关于摩擦表面之间存在水的理论集中在通过压力融化形成水，由于摩擦加热融化和冰表面的“液体状”特性。从我们的测量和计算，它的结论是液体状的表面性质的冰似乎是一个合理的解释速度滑冰过程中的低摩擦。
During speed skating, the external power output delivered by the athlete is predominantly used to overcome the air and ice frictional forces. Special skates were developed and used to measure the ice frictional forces during actual speed skating.The mean coefficients of friction for the straights and curves were, respectively, 0.0046 and 0.0059. The minimum value of the coefficient of ice friction was measured at an ice surface temperature of about -7-degrees-C. It was found that the coefficient of friction increases with increasing speed,In the literature, it is suggested that the relatively low friction in skating results from a thin film of liquid water on the ice surface. Theories about the presence of water between the rubbing surfaces are focused on the formation of water by pressure-melting, melting due to frictional heating and on the 'liquid-like' properties of the ice surface. From our measurements and calculations, it is concluded that the liquid-like surface properties of ice seem to be a reasonable explanation for the low friction during speed skating.