刘亮

摘 要：乒乓球使用新材料具有更好的安全、环保特点，相关规定表明重大赛事上需要使用新材料乒乓球，于是就会影响到运动员的运动水平。因为乒乓球材质的改变，就会影响到其运动特征。为了帮助运动员掌握新材料乒乓球的运动特点，文章基于显示动力学理论分析新材料乒乓球碰撞动力学性能，其中还结合使用有限元分析法。通过建立球拍和乒乓球的碰撞模型，然后分析乒乓球不同材质和入射角对其速度、接触时间和能量损失的影响。实验结果表明，本文所研究的计算方法具有较准确的结果;并且材质对接触时间影响非常小，新材料乒乓球具有更快的速度;当入射角不断增加时，乒乓球的反射速度不断降低，接触时间不断延长。

关键词：乒乓球;显示动力学理论;新材料;碰撞动力学

中图分类号：G846 文献标识码：A 文章编号：1001-5922（2021）05-0169-04

Analysis of Collision Dynamics Performance of New Materials Tab Tennis Based on Explicit Dynamics Theory

Liu Liang

（Xi an Aeronautical Polytechnic Institute， Xi an 710089，China ）

Abstract：The use of new materials for Tab tennis has better safety and environmental protection characteristics. The relevant regulations indicate that new materials need to be used in major events， which will affect the athletes athletic level. Because the change of Tab tennis material will affect its movement characteristics. In order to help athletes grasp the sports characteristics of the new material Tab tennis， the paper analyzes the collision dynamics performance of the new material Tab tennis based on the display dynamics theory， which also uses a finite element analysis method. By establishing a collision model of racket and Tab tennis， and then analyzing the effects of different materials and incident angles of Tab tennis on its speed， contact time and energy loss. The experimental results show that the calculation method studied in this paper has more accurate results; and the material has very little effect on the contact time， the new material Tab tennis has a faster speed; when he angle of incidence continues to increase， the reflection speed of the ping pong ball continues to decrease and the contact time continues to increase.

Key words：Tab tennis; display dynamics theory; new materials; collision dynamics

乒乓球作为我国的国球，在各种竞技比赛中多次荣获冠军。随着人类对乒乓球的要求不断提高，对其材质、构造等都有一定要求，并且也在对其进行不断完善。传统的乒乓球材料为赛璐珞，这种材质有毒且易燃烧，于是人类研发了另外一种新型塑料乒乓球，该新材料为醋酸纤维素，这种材料低碳环保、不易燃烧，安全隐患非常低，于是2014年后，规定大型比赛项目不能使用赛璐珞乒乓球[1-2]。随着新型材料的使用，必然会影响到球的运动特点和运动员的作战方式。于是相关学者就会对新材料乒乓球运动特点进行研究，研究乒乓球碰撞动力学比较少[3-4]。……