Steel and Composite Structures

  • 제46권5호
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  • Pages.669-672
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  • 2023
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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On wave propagation of football ball in the free kick and the factors affecting it

  • Xumao Cheng (School of Physical Education, Shanghai University of Sport) ;
  • Ying Wu (School of Physical Education, Shanghai University of Sport)
  • 투고 : 2022.07.03
  • 심사 : 2023.03.06
  • 발행 : 2023.03.10
⟨ 이전 논문 다음 논문 ⟩

초록

In this research, the researcher has examined the factors affecting the movement of the soccer ball and will show that the effects such as air resistance, altitude above sea level, wind, air pressure, air temperature, air humidity, rotation of the earth, changes in the earth's gravitational acceleration in different areas. It, the geographical length and latitude of the launch point, the change of gravitational acceleration with height, the change of pressure with height, the change of temperature with height and also the initial spin (Magnus effect) affect the movement of projectiles (especially soccer ball). We modelled th ball based on shell element and derive the motion equations by energy method. Finally, using numerical solution, the wave of the ball is studied. The influences of various parameters are investigated on wave propagation of the ball. Therefore, in short, it can be said that the main factors that play a major role in the lateral deviation of the hit ball are the initial spin of the ball and the wind.

키워드

참고문헌

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