Multi objective optimization of golf shafts considering distance and stability

Abstract

Our goal is to establish a multi objective optimization method of golf shaft to satisfy both with distance and stability. We suggest body burden as a new index for the stability in golf shot. Multi body dynamics and inverse kinetics were used for calculation of the body burden. We defined the body burden as total joint torque of the upper body considering threshold. Club speed was used as an index for the distance. Finite element method and Response surface method are applied for calculation of the club speed and reduction of optimization computing time. From pareto solution, we found out the each best shaft and the each body motion in the case of placing importance on club speed and body burden.