The Proceedings of the Symposium on sports and human dynamics
Online ISSN : 2432-9509
2013
Session ID : 303
Conference information
303 Motion and Curl Mechanisms of a Curling Stone (2) : Curl Ratio, Sweeping and Pebble Density
Norikazu MAENO
Author information
CONFERENCE PROCEEDINGS FREE ACCESS

Details
Abstract
The motion of a curling stone is controlled by the frictional interaction between its running band and pebbles on the ice sheet. In this paper more detailed results of computations of path trajectory, curl ratio, and effects of sweeping, pebble density and the level of ice sheets are reported. Curl ratio is a convenient quantity to specify definitely the direction of a stone to move at a given translational and angular velocities. It increases with the decreasing translational velocity and increasing angular velocity. Sweeping can be reasonably explained as warming of ice surface. The increase in the number density of pebbles leads to the decrease in the pressure acting on pebbles, resulting in the increase in the ice friction coefficient and curl ratio. Trajectories at various inclined ice sheets are computed and discussed.
Content from these authors
© 2013 The Japan Society of Mechanical Engineers
Previous article Next article
feedback
Top