考虑空气阻力时标枪最佳出手角度研究  

Study on the Optimal Release Angle of Javelin with Air Resistance

作　　者：廖红[1] 张绪树[1] 陈维毅[1] 郭媛[1] 

机构地区：[1]太原理工大学,山西太原030024

出　　处：《中国体育科技》2007年第1期98-101,共4页China Sport Science and Technology

摘　　要：对考虑空气阻力时标枪的最佳出手角进行计算机仿真研究。通过刚体理论,推导了考虑空气阻力时标枪的动力学方程组,并在不同出手参数组合的情况下对标枪的出手角进行计算和分析。采用文献中的有关标枪的几何和物理参数,使用Mathematica数学软件进行方程的推导和数值计算。通过计算,得到标枪的初始攻角和俯仰角速度对出手角度选择的影响较显著。若无初始俯仰角速度时,最好的出手角度范围为37°~43°,其中42°最佳;最好的出手范围为39°~44°,其中43°最佳;攻角的适宜值为-9°~0°,初始俯仰角速度的适宜值为-12°/s^-6°/s。In this paper, the optimal release angle of javelin with air resistance is studied by using computer simulation. The dynamic equations of javelin with air resistance are derived through rigid body theory and the release angles are calculated and analyzed under the combination of different release parameters. The geometrical and physical parameters of javelin are adopted and the moving equations are derived and calculated numerically with Mathematica software. Through calculation,the effect of initial attack angle and pitching angular velocity on the selection of release angle is remarkable. The best range of release angle with no pitching angular velocity is from 37° to 44° and the optimal angle is 43°. The suitable range of initial attack angle and pitching angular velocity are 0°～ 9° and - 6°/s°～-12°/s respectively.

关 键 词：标枪 出手角度 空气阻力 

分 类 号：G824.3[文化科学—体育训练]