Simulation research on the apparatus work of rhythmic gymnastics ball with CFD technology

Abstract

With the application of CFD technology in the field of sports engineering research, there are many research results on ball sports such as football and table tennis, but less research on rhythmic gymnastics equipment for difficult and beautiful sports. This paper uses ADAMS dynamic analysis software to carry out CFD simulation test on ball exercise equipment, and explore the influence of different parameters on the air movement of ball equipment. The results are as follows: (1) the factors that affect the track of rhythmic gymnastics ball in the air are the mass, volume, velocity of the ball, as well as the forces of the ball in the air. (2) The rotation speed of the ball is an important factor affecting the lateral bending degree of the track of rhythmic gymnastics ball. The rotation speed and the air pressure difference between the left and right sides of the ball are directly proportional to the curvature of the running track.(3) The gliding performance of rhythmic gymnastics ball mainly depends on the value of lift drag ratio, which has an important influence on the flight height and flight time of the ball, and its size changes with the attack angle. And there are some suggestions: rhythmic gymnastics ball in the air belongs to non dynamic flight. It is suggested that in practice, the athlete should consider a series of factors, such as the initial velocity of the ball, the throwing angle and the height of the shooting point, so as to effectively control the flight radian, distance and height of the artistic gymnastics ball.