基于有限元分析的棒球最佳击球点问题.pdf

10 3 ( ) V ol. 10 No. 3 2010 9 JOURNA L OF NAN JING NORMA L U N IV ER S ITY ( ENG INEER ING AN D T ECHNOLOGY ED IT ION) Sept, 2010 基于有限元分析的棒球最佳击球点问题 1 1 1 2 1 倪 睿, 袁 静 , 王 琪, 尹 静 , 庄建军 ( 1. , 2 10093; 2. , 20 1319) [ ] , , , . , 752 , , 3, . , ( 813 cm ) , : 624 ~ 708 cm, . [ ] , , , , [ ] O 325 [ ] A [ ] 2010) Analysis of the Sweet Zone on a BatBased on the Finite ElementM odel 1 1 1 2 1 Ni Rui, Yuan Jing, W ang Qi, Yin Jing, Zhuang Jianjun ( 1. D epartm ent o E lectron ic Science and Engin eering, N anjing U n iversity, N anjing 2 10093, Ch ina; 2. D epartm ent o In orm ation T echnology, Shangh ai J ianq iao C ollege, Shangh ai 20 1319, Ch ina) A stract: In sea rch o the optmi a l hit reg ion in a runn ing baseball bat, based on the beam vibra tion m ode,l th is paper analyzes the energy transm iss ion o the v ib ration or a un i orm beam and obta ins the zone w here there is least energy loss. T hen the inite e lem ent analysis is app lied in w h ich the irregu la rly shaped bat is m eshed into 752 regular triangles to be analyzed, and the v ibration equa tion toge ther w ith boundary conditions is u sed to calcu la te its irst three v ibration nodes. F ina lly, the sw ee t zone is determ ined, w h ich is located betw een the base w ave and the second o rder ha rmon ic nodes. T aking the standard ized baseba ll ba t ( 81. 3 cm ) or an examp le, the sw ee t zone rang es rom 62. 4 cm to 70. 8 cm rom the thinne r end, w h ich prov ides a theoretica l oundation or baseba ll play ers t