Analysis of Drop Point Track of Ping Pong Ball After Hitting Based on Dynamic Analysis

B L Wang

doi:10.21152/1750-9548.14.2.193

Abstract

Table tennis is a popular sport in China. It has a low barrier to entry and also has difficult techniques. In order to improve the skills of table tennis match between players, this paper introduced the dynamic analysis of ping pong ball in flight after being hit. The main content was the stress analysis in the flight of ping pong ball. Moreover, the Magnus force caused by rotation was considered. The dynamic model of ping pong ball flight was built, the flight track of top spinning ball at 0, 30, 60, 90 and 120 r/s was simulated using Java software. The actual flight track of ping pong ball under the same conditions was obtained using the table tennis serving machine and high-speed camera to verify the effectiveness of the dynamic model. The results showed that the track obtained by the dynamic model basically coincided with the actual track, which verified the validity of the dynamic model; the maximum height and drop point distance of ping pong ball decreased with the increase of spinning speed of top spinning ball; the flight time of ping pong ball decreased with the increase of spinning speed of top spinning ball. To sum up, players can reduce the flight height, drop point distance and flight time of ping pong ball by increasing the top spinning speed, so as to improve the opponent’s counterattack difficulty.

Highlights

Table tennis has a very large audience in China as the equipment required is very simple and the sport field needed is relatively small; China is known as table tennis superpower [1]
Xiao et al [6] studied the pen-hold forehand flip-loop combo technique using the experimental method of sports biomechanics and found that the movement and hitting speed of the technique were similar to the forehand flip shot technique, the ball rotation speed was between forehand flip shot and backhand flip shot, and the flight path was in a shape of hook, which was conducive to improving the forehand attack ability
Five ping pong balls with different rotation speeds were launched by a table tennis serving machine under the conditions shown in Table 1, and the flight track of the ping pong balls was captured by a high-speed camera [14] and compared with the track calculated by the dynamic model

Summary

INTRODUCTION

Table tennis has a very large audience in China as the equipment required is very simple and the sport field needed is relatively small; China is known as table tennis superpower [1]. Bankosz et al [5] conducted six series of hitting experiments on 12 female table tennis players in the certified biomechanics laboratory using the motion analysis system to present different kinds of topspin images and found that changing the type of topspin required changing the time, speed, main distance parameters and the direction of racket. The dynamic model of the flight of ping pong ball was established, and the simulation of the flight path of the top spinning ball at 0, 30, 60, 90 and 120 r/s were carried out by Java software. The actual flight track of ping pong ball under the same conditions was obtained by the table tennis serve machine and high-speed camera to verify the effectiveness of the dynamic model

DYNAMICS PRINCIPLE OF FLIGHT PATH OF PING PONG BALL AFTER BEING HIT

Experiment Setup

Experimental Results

CONCLUSION