Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 09, 2016 - November 11, 2016
Movement of a curling stone was studied with high-precision digital image analysis in order to obtain the relationship between curl ratio and angular velocity at each moment of its slide, using sequential images taken with a camera located on the ceiling. Calibrations to remove lens aberration were done prior to the experiment. Defining the reference line as the direction of movement of the curling stone at a moment, a curl distance was measured at a translation distance 1000 mm, and converted to curl ratio. The 217 deliveries were performed in total, and 212 deliveries were successfully analysed in the range of translational velocity 0.5 - 3.0 m/s and angular velocity 0.3 - 3.0 rad/s. In the analysis, curl ratio at each moment of the slide of stone for the deliveries was derived by the image processing. It was shown that the curl ratio has tendency to become smaller as the angular velocity increases for the same range of the translational velocity.
The Proceedings of Joint Symposium: Symposium on Sports Engineering, Symposium on Human Dynamics
