Development of an evaluation of golf club performance using a finite element model for representing collision of a ball with a club during swing

本研究的目的是建立一个有限元模型来模拟高尔夫球杆和球从挥杆到撞击的力学行为，并利用所建立的模型来评价球杆的性能。利用高尔夫机器人进行了杆握杆运动实验，得到了杆握杆与球的运动特性。将实验得到的握把位置坐标数据输入到握把模型中，建立了摆动模型。仿真结果与实验结果基本吻合。利用该模型对不同击球点的球的发射行为进行了分析。球的发射速度在冲击点位于脚趾和鞋底的一边，而不是甜蜜点（SS），往往不会减少很多从SS的冲击。据估计，这一趋势是由于球棒头的冲击速度分布，从脚后跟和头顶向脚趾和鞋底的冲击速度倾向增加。

The objective of this study was to construct a finite element model for simulating the mechanical behavior of a golf club and ball from swing to impact, and to evaluate club performances using the constructed model. An experiment using a golf robot was conducted to obtain the motion of the shaft grip, and the behavior of the club and ball. The swing model was developed by inputting the positional coordinate data of the grip, which was obtained from an experiment, into the grip model. The simulation results generally matched the experimental results. The ball launch behavior was analyzed using the model with different ball impact points. The ball launch velocity at impact points situated on the toe and sole side, rather than the sweet spot (SS), tended not to decrease as much from the SS impact. It was estimated that the trend was attributed to the distribution of the impact velocity of the clubhead, which tended to increase towards the toe and sole, from the heel and crown on the face.