复合材料垒球棒模态振型和冲击性能的数值分析  

NUMERICAL ANALYSES ON MODAL SHAPE AND IMPACT PERFORMANCE OF COMPOSITE SOFTBALL BAT

作　　者：解鑫[1] 毛佳佳[2] 陈继业 XIE Xin;MAO Jia-jia;CHEN Ji-ye(Department of Motion, Nanjing Sport Institute, Nanjing 210033, China;Department of Basic, Nanjing Jincheng College, Nanjing 210000, China;College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China)

机构地区：[1]南京体育学院运动系,南京210033 [2]南京航空航天大学金城学院基础部,南京210000 [3]南京工业大学土木工程学院,南京211816

出　　处：《玻璃钢／复合材料》2018年第12期47-52,共6页Fiber Reinforced Plastics/Composites

基　　金：国家自然科学基金面上项目(51578285;51778285);江苏省自然科学基金面上项目(BK20161545)

摘　　要：碳纤维复合材料垒球棒相比传统的铝合金球棒和实木球棒,具有重量轻、强度高、抗冲击性能高、疲劳寿命长等特点。利用ANSYS/LS-DYNA有限元软件,建立了复合材料垒球棒模型,并将有限元结果与试验值[6]进行了对比,验证了模型的可靠性。利用提出的模型,对三种常用复合材料垒球棒进行了数值模拟,对比了模态振型和垒球回弹速度。结果表明,Demarini垒球棒的弯曲和环向模态振型幅值均较小,有利于其工作性能的发挥,且具有较好的击球性能。Comparied with the traditional aluminium alloy softball bat and wooden softball bat,carbon fiber composite softball bat hare some major advantages,such as light in weight,high strength,high impact resistance,and high fatigue life.In this paper,ANSYS/LS-DYNA finite element software was used to establish a composite softball bat model.The experimental results[6]could be predicted by the proposed numerical model with sufficient accuracy.Moreover,the proposed numerical model was used to simulate three common composite softball bats on modal shapes and softball rebound velocities.The results demonstrated that Demarini softball bat has smaller bending modal shape and hoop modal shape,which resulted in good working performance,and such softball bat also has better batting performance.

关 键 词：垒球棒 复合材料 模态振型 回弹速度 

分 类 号：TB332[一般工业技术—材料科学与工程]