20S 薄板に衝突するゴルフ・ボールの反発特性の解析

概要

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In this paper, the restitution characteristics of golf balls colliding with thin plates, which are the models of club-heads, are described by the results of a computer simulation based on a finite element (FE) method and also of an experiment. FE models for a golf ball and plates were constructed by hexahedral solid elements. The material properties of ball were determined as a linear visco-elastic three-element model. On the other hand, circular plates of titanium were thought as linear elastic bodies. The impact simulation between the ball model and the target models was conducted by a FE code, ABAQUS. The results suggest that the coefficient of restitution tends to be higher at any impact velocity as the thickness of the circular plates goes thinner. And the reason of the above was concluded as follows. In case of a collision with a thin target, the target deforms more than a thick one, and therefore, the ball does not deform so much as in case of a collision with a thick target, Therefore dissipation of energy decreases and resilient energy increases. And eventually the coefficient of restitution increases.
社団法人日本機械学会の論文
2000-11-08