The importance of the surface roughness and running band area on the bottom of a stone for the curling phenomenon
| Autor: | Kimiteru Sado, Takao Kameda, Satoshi Yanagi, Yasuhiro Harada, Daiki Shikano |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Curl (mathematics)
geography Multidisciplinary geography.geographical_feature_category Physics lcsh:R lcsh:Medicine Geometry 02 engineering and technology Surface finish 021001 nanoscience & nanotechnology Article Curling Applied physics 020303 mechanical engineering & transports Band area 0203 mechanical engineering Surface roughness lcsh:Q Ice sheet lcsh:Science 0210 nano-technology Geology |
| Zdroj: | Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | Curling is a sport in which players deliver a cylindrical granite stone on an ice sheet in a curling hall toward a circular target located 28.35 m away. The stone gradually moves laterally, or curls, as it slides on ice. Although several papers have been published to propose a mechanism of the curling phenomenon for the last 100 years, no established theory exists on the subject, because detailed measurements on a pebbled ice surface and a curling stone sliding on ice and detailed theoretical model calculations have yet to be available. Here we show using our precise experimental data that the curl distance is primarily determined by the surface roughness and the surface area of the running band on the bottom of a stone and that the ice surface condition has smaller effects on the curl distance. We also propose a possible mechanism affecting the curling phenomena of a curing stone based on our results. We expect that our findings will form the basis of future curling theories and model calculations regarding the curling phenomenon of curling stones. Using the relation between the curl distance and the surface roughness of the running band in this study, the curl distance of a stone sliding on ice in every curling hall can be adjusted to an appropriate value by changing the surface roughness of the running band on the bottom of a stone. |
| Databáze: | OpenAIRE |
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