Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 25, 2019 - October 27, 2019
Volleyball is a sport that begins with a serve, so hitting an effective serve is important for winning the game.The purpose is to propose an ideal serve method.The research content is divided into three. The first is volleyball fluid force measurement. The fluid force was measured at a wind speed of 0 to 29 m / s using a wind tunnel. The second is the measurement of the number of revolutions of the jump serve ball by an actual hit experiment. The serve was struck with a high-speed camera, and the rotation speed was measured using a dirt fish. The third is to analyze landings and changes from injection experiments. Each panel was fired, and the landing point, rotation speed, and change were analyzed. As a result, it was found that the area of drug crisis differs depending on the ball type and panel. I know the number of revolutions of the jump serve ball. We were able to grasp the tendency of the change of the ball from the landing point.