Study for the behavior of badminton shuttlecock immediately after its impact

Abstract

The purpose of this study was to clarify factors that affect shuttlecock flight behavior immediately after impact and propose a method to quantify the degree of contribution. The shuttlecock was modeled as a linked segment model. External force acting on the shuttlecock was applied to each of the feather and the cork. The equation of motion of the shuttlecock was derived by simultaneous establishment of cork and feather constraint formula. In order to verify the accuracy of behavior prediction by simulation, the impact test of a shuttlecock was carried out. The launch machine consists of a rotary arm and a racquet head. The shuttlecock was fixed to cord with foam material. For the simulation model, the stiffness obtained by measurement was used. The results showed that 1) although the center of gravity velocity contained error between simulation and experimental, the trend of change was consistent. 2)both the simulation and experimental angular velocity of the shuttlecock increased immediately after its impact and decreased after reaching the peak. From these results, the validity of the proposed model was shown to predict the behavior of the shuttlecock immediately after the impact. The future task is to design an artificial shuttlecock that is similar to natural one by utilizing these results.