A33 ゴルフクラブのヘッドを模擬した中空体とボールとの衝突解析(ゴルフ2)

概要

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The purpose of this study is to investigate the influence of impact conditions on the rebound behaviour of a golf ball after impact, by conducting a finite-element (FE) analysis of a ball colliding with an imitation golf clubhead. The imitation clubheads were designed based upon the mass, volume and position of the centre of gravity of commercial clubheads. 4 circular hollow bodies of constant mass, made of a titanium alloy, with increasing loft angle were manufactured. This was made possible by changing the thickness of the back face. Both an FE model of a ball (with hyperelasticity and viscoelasticity) and an FE model of a clubhead (with linear elasticity) were constructed. The impact behaviour of the ball and clubheads was obtained from the impact simulations using these models. Impact experiments were also conducted to confirm the accuracy of the FE models, by comparing the results for the experiments to those for the FE analyses. The results of the impact simulations matched with the experimental results. The impact behaviours were analysed by varying the impact point of the balls colliding with the clubheads (using the FE models). The impact point where the rebound velocity of the ball was the largest, was located below the sweet spot (sole side of clubhead), and this impact point depended on both the position of the sweet spot and the loft angle of clubhead.
2006-11-08