Effect of a soccer ball`s seam geometry on its aerodynamics and trajectory
Five different soccer balls, each possessing the traditional 32-panel surface design, were tested in a wind tunnel. Only seam depth and width varied between the balls. Wind-tunnel tests and an examination of correlation revealed that seam width with a linear fit R2=0.90 and p<10-4 was a stronger indicator of a ball`s critical speed than seam depth. Wind-tunnel data were used for computational modeling of many soccer-ball trajectories. It was determined that variations in seam geometry resulted in fluctuations up to 4 m in the horizontal range of hard-hit, no-spin kicks that travel approximately 68 m. Those seam geometry variations also contributed to lateral deflections up to 4 m for the aforementioned hard-hit, no-spin kicks.
Corrigendum: https://doi.org/10.1177%2F1754337119891676
© Copyright 2020 Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology. SAGE Publications. Kaikki oikeudet pidätetään.
Aiheet: | jalkapallo urheiluvälineet urheiluvälineiden suunnittelu ja rakentaminen mallintaminen aerodynamiikka matematiikka |
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Aihealueet: | tekniset ja luonnontieteet urheilutilat ja urheiluvälineet urheilukilpailut |
Tagging: | knuckle effect Flugbahn Trajektorie |
DOI: | 10.1177/1754337119876485 |
Julkaisussa: | Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology |
Julkaistu: |
2020
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Vuosikerta: | 234 |
Numero: | 1 |
Sivuja: | 19-29 |
Julkaisutyypit: | artikkeli |
Kieli: | englanti (kieli) |
Taso: | kehittynyt |