The Proceedings of the Symposium on sports and human dynamics
Online ISSN : 2432-9509
2016
Session ID : C-23
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Effects of Sweeping on the Motion of a Curling Stone
-Temperature Rise by Friction, Local Slope and Ice Particulates Formation by Abrasiond-
Norikazu MAENO
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

Friction and abrasion are inevitable when the ice surface is swept with any smooth brush head. Heat produced by friction reduces the ice friction coefficient and makes the stone slide farther. Abrasion produces a local slope and fine ice particulates through mechanical deformation and destruction of pebbles. The gravity force due to the local slope formed in front of the stone must be taken into consideration in the stone motion. Our calculation showed that with powerful sweeping it is possible in principle to manipulate the trajectory of a stone, that is, to accelerate or change the direction and extent of curl. Sweeping using a brush head with hard rough surface is not discussed in the present paper, which may produce serious mechanical damage on ice surfaces, e.g., scratches and ditches, and may not be used in usual curling games.

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© 2016 The Japan Society of Mechanical Engineers
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