CAJ | 학술논문

运用文献资料法、运动力学和数学分析等方法,建立了铅球投掷距离与铅球的出手速度、出手角度和出手高度三个因素之间关系的数学模型。利用MATLAB编程计算,通过作图逐层对影响铅球投掷成绩的因素进行了灵敏度分析和定量分析,分析了三个影响因素的主次关系,尤其是明确了一直以来备受争议的出手角度和出手高度的影响,为科学的训练、选材以及成绩的提高提供理论依据。
운용문헌자료법、운동역학화수학분석등방법,건립료연구투척거리여연구적출수속도、출수각도화출수고도삼개인소지간관계적수학모형。이용MATLAB편정계산,통과작도축층대영향연구투척성적적인소진행료령민도분석화정량분석,분석료삼개영향인소적주차관계,우기시명학료일직이래비수쟁의적출수각도화출수고도적영향,위과학적훈련、선재이급성적적제고제공이론의거。
By means of literature, sports mechanics and mathematical analysis, a mathematical model is established about the relationship between the casting distance and the three factors of casting speed, angle and height. MATLAB programming calculation is used by drawing to carry out sensitivity and quantitative analyses of the influential factors in shot put casting. The primary and secondary relations of the three factors are also analyzed to define the controversial in- fluence of casting angle and height. The purpose of this research is to provide theoretical references for scientific train- ing, selection of talents and improvement of performance.