论文标题
通过精确运动学测量冰壶运动的卷发机制的研究
Study of curling mechanism by precision kinematic measurements of curling stone's motion
论文作者
论文摘要
为什么卷曲的石头卷曲？这是物理学家经常问的问题，但没有建立答案。与我们的天真期望相反，石头旋转顺时针卷曲。在与假设相矛盾的一个世纪之后，本文根据实验证据提供了答案。数字图像分析技术用于对卷发石的运动进行精确的运动学测量，以识别卷发机制。我们观察到由于速度依赖摩擦常数而导致的左右不对称摩擦。结合冰和石头之间摩擦的离散点状性质，绕慢速摩擦点摇摆已被结论为卷发的主要起源。已经发现了许多新的角动量转移现象，以支持这一结论。
Why do curling stones curl? That is a question physicists are often asked, yet no answer has been established. Stones rotating clockwise curl right, contrary to our naive expectations. After a century of debate between contradicting hypotheses, this paper provides the answer based on experimental evidence. A digital image analysis technique was used to perform precision kinematic measurements of a curling stone's motion to identify the curling mechanism. We observed a significant left-right asymmetric friction due to velocity dependence on the friction constant. Combined with the discrete point-like nature of the friction between ice and stone, swinging around slow-side friction points has been concluded as the dominant origin of the curling. Many new angular momentum transfer phenomena have been found, supporting this conclusion.
