Naslov
An analysis of fruit detachment by oscillation of the stem and fruit through vibration

Autori
Lukač, Petar ; Knežević, Dario ; Šumanovac, Luka ; Atanasov, Atanas

Izvornik
Balkan Agriciltural Engineering Review (1312-5443) 17 (2012); 1-9

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Analysis of fruit detachment ; oscilation ; vibration

Sažetak
A mechanical model of the detachment of fruit, oscillation of the stem and fruit are analyzed in this work, where a more pronounced weight of the fruit, an assumed higher density, and stem with greater rigidity than bond strength were taken. Detachment of the fruit is caused by tensile force, where it achieves the highest value when the fruit passes through its vertical position, where cost 1, ( cos 1 and that is for   0 ). Detachment force changes with the ratio of branch amplitude and branch (stem) oscillations. It is more difficult to shake off a longer branch (stem) while shaking the fruit rather than those with shorter stems (a problem of centrifugal force). The shorter the length of the stem, the greater the rigidity and angular frequency ; that is, a four times shorter length means two times greater frequency. It can be concluded that in higher frequencies of the shaker, only the fruit detach, but in lower frequencies the fruit along with the stem detach.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Poljoprivreda (agronomija)

POVEZANOST RADA