Multi-objective exploration of the launch condition for a fluctuating punted kick in rugby on the basis of PSP measurement
Multi-objective exploration of the launch condition for a fluctuating punted kick in rugby on the basis of PSP measurement
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DOI：
10.1016/j.proeng.2010.04.022
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发表时间：
2010-06
期刊：
影响因子：
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通讯作者：
K. Seo;Daisuke Yorita;K. Shimoyama;H. Nagai;K. Asai
中科院分区：
文献类型：
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作者：
K. Seo;Daisuke Yorita;K. Shimoyama;H. Nagai;K. Asai
我们成功地获得了橄榄球的PSP（压敏漆）测量结果。发现球的接缝是引发低压的触发器。因此，旋转较慢的球在飞行过程中由于球两侧的不对称压力分布而波动。基于PSP测量结果，对脉动踢水进行多目标优化，并利用自组织映射（Self-Organizing Maps）可视化目标函数与控制变量之间的权衡关系。结果发现，发射时的旋转速率越高，波动的数量越大;然而，悬挂时间变得越短。
We succeeded in obtaining PSP (Pressure-Sensitive Paint) measurements for a rugby ball. It was found that the seam of the ball is the trigger for initiating low pressure. Therefore, a slower spinning ball fluctuates during flight because of the asymmetrical pressure distribution on the sides of the ball. Based on the results from PSP measurements, multi-objective optimization of the fluctuating punted kick was carried out, and then the trade-offs between the objective functions and the control variables could be visualized using Self-Organizing Maps. It was found that the higher the spin rate at launch the greater the number of fluctuations; however, the hang time becomes shorter.