Dynamic Contact Behavior of a Golf Ball during an Oblique Impact

摘要

The oblique impact between a golf ball and a rigid steel target was studied using a high-speed video camera. Video images recorded before and after the impact were used to determine the inbound velocity v i, rebound velocity v r, inbound angle θi, rebound angle θr, and the coefficient of restitution e. The results showed that θr and e decreased as v i increased. The maximum compression ratio ηc, contact time t c, average angular velocity $overline{omega } $ , and tangential velocity $overline{v} _{{text{t}}} $ , along the target were determined from images obtained during the impact. The images demonstrated that ηc increased with v i while t c decreased. In addition, $overline{omega } $ and $overline{v} _{{text{t}}} $ increased almost linearly as v i increased. A rigid body model was used to estimate the final angular velocity ω* and tangential velocity νt* at the end of the impact; these results were then compared with experimental data.