Dynamic Contact Behavior of a Golf Ball during an Oblique Impact |
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| Authors: | K. Arakawa T. Mada H. Komatsu T. Shimizu M. Satou K. Takehara G. Etoh |
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| Affiliation: | (1) Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga-koen, kasuga-shi, 816-8580 Fukuoka, Japan;(2) Research Institute for Applied Mechanics, Kyushu University, Fukuoka, Japan;(3) Maruman & Co., Ltd., Tokyo, Japan;(4) Apen Engineering Office, Tokyo, Japan;(5) School of Science and Engineering, Kinki University, Osaka, Japan |
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| Abstract: | 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  , and tangential velocity  , 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,  and  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. |
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| Keywords: | Golf ball Oblique impact High-speed video camera Inbound and rebound velocity Inbound and rebound angle Coefficient of restitution Compression ratio Contact time Tangential and angular velocity Rigid body model |
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