新空翻动作的仿真与分析

本文应用多体系统动力学理论采用试验的方法,对一组高速摄影图片中的"起跳转体90°,分腿团身空翻一周"动作进行仿真研究,将运动员人体结构简化为一悬空树形结构系统的模型,它由11个环节组成的.通过仿真研究,已经揭示了实现该动作所需要的初始运动条件及运动全过程的运动生物力学特性.并对侧空翻转体运动的稳定性进行了论证,为教练、运动员实现这一新动作提供了理论依据.

Computer Simulation and Analysis of New Airspring Action

The author uses the cut and try method of the computer to carry out computer simulation for the jump with 1/4 turn around the longitudinal axis of the body to side-straddle tuck turnover sideways with 1/1 turn (around the sagittal axis of the body) in the set of the high speed photos.In order to study the computer simulation, in this paper, the gymnast is reduced to the model of an aerial tree structure system which consists of 11 linked rigid segments. Through computer simulation, the initial condition needed to accomplish this motion and the biomechanical properties of the whole motion have been revealed, and the stability of the side somersault added to transit motion has been remarked. Theoretical basis is provided for the coach and gymnast to realize the set action.