CAJ | 학술논문

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。
대고필공기조력시표창적최가출수각진행계산궤방진연구。통과강체이론，추도료고필공기조력시표창적동역학방정조，병재불동출수삼수조합적정황하대표창적출수각진행계산화분석。채용문헌중적유관표창적궤하화물리삼수，사용Mathematica수학연건진행방정적추도화수치계산。통과계산，득도표창적초시공각화부앙각속도대출수각도선택적영향교현저。약무초시부앙각속도시，최호적출수각도범위위37°～43°，기중42°최가；최호적출수범위위39°～44°，기중43°최가；공각적괄의치위-9°～0°，초시부앙각속도적괄의치위-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.