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Calculated Trajectories of Curling Stones Sliding Under Asymmetrical Friction: Validation of Published Models
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Tribomaterials group)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Tribomaterials group)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Tribomaterials group)
2013 (English)In: Tribology letters, ISSN 1023-8883, E-ISSN 1573-2711, Vol. 50, no 3, 379-385 p.Article in journal (Refereed) Published
Abstract [en]

In the sport of curling, stones are slid across an ice sheet, aimed towards a target area. A sliding stone does not move in a straight line, but follows a curled trajectory, deviating in a direction determined by its rotation. As yet, no satisfactory explanation for this motion has been presented, although many attempts have been made. In many of them, the curling motion has been attributed to an asymmetrical distribution of the friction force acting on the sliding stone, typically such that the friction on the rear of the stone (as seen in the direction of motion) is higher than that on the front. In this paper, the motion of a rotating curling stone sliding over ice is calculated, for different assumed distributions of the coefficient of friction in the contact between stone and ice, using a numerical method. It is shown that no redistribution of the friction, no matter how extreme, can explain the observed motion of a real curling stone.

Place, publisher, year, edition, pages
2013. Vol. 50, no 3, 379-385 p.
Keyword [en]
Curling, Ice friction, Asymmetrical friction
National Category
Engineering and Technology
Research subject
Engineering Science with specialization in Materials Science
Identifiers
URN: urn:nbn:se:uu:diva-203285DOI: 10.1007/s11249-013-0135-9ISI: 000319161700008OAI: oai:DiVA.org:uu-203285DiVA: diva2:636204
Available from: 2013-07-09 Created: 2013-07-08 Last updated: 2017-12-06Bibliographically approved

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Nyberg, HaraldHogmark, StureJacobson, Staffan

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