24S ゴルフ・ボールの斜め衝突のシミュレーションと粘弾性の影響(スポーツ工学シンポジウム2001)

概要

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It is a common knowledge that golf club heads of thin-walled structure provide higher coefficients of restitution than those of solid. However the mechanism of producing higher restitution characteristics has not been clearly explained by means of computer simulation or experiment. This paper describes how the impedance of impact face, that is, the wall-thickness affects the rebound conditions of a ball after collision, that is, velocity, angle and spin rate by conducting computer simulations based on Finite Element Method. The material properties of balls were determined as a three-element visco-elastic model by conducting experiments to let golf balls collide with a rigid target and to obtain load and deformation relationship during collision. The coefficient of friction was also determined by comparing with the experiments to let balls collide with circular plates. By using the above conditions the oblique impact of balls with circular plates of various thickness could be simulated under various impact conditions and the comparison with experimental results could be made. The results show that the coefficients of restitution maximize approximately at 3mm for plate thickness.
一般社団法人日本機械学会の論文
2001-11-07