222 Study on Dynamics of Golf Swing : 2^<st> Report, Influence of golf ball flight on a shaft design parameter

Abstract

We could treat the shaft as elastic body by swing model proposed by Inoue. As a result, we could consider the influence of shaft vending deformation and torsion deformation during swing. We have investigated the influence of shaft designing parameter with the trajectory of golf ball by using this model. The moving of the head would be as below when reducing the shaft stiffness. The launch angle of club face would be higher and the recurving of head to right side would be increased when ball impact.