Study on Index of Ease-of-Swing of Golf Club

Abstract

Ease-of-Swing of golf club deeply related to the speed of golf club head at impact. It is said at the golf industry, golf club weight and golf club balance are considered as the influential parameters for the speed of golf club head at impact. Also, moment of inertia of golf club around grip end is sometimes considered as the same. However, those considerations are not well grounded. In this study, the golfer's arm and club were modelled with the double pendulum model. And, the effects of club parameters for the speed of golf club head at impact were investigated with the theoretical modal analysis, numerical simulation, and experiment. It was found, as a result, that the moment of inertia around shoulder when the arm and golf club are on a straight line have more influential to the speed of golf club head than golf club weight, golf club balance, and moment of inertia of golf club around grip end.