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Movement modes of a fruit during vibration harvesting

Published under licence by IOP Publishing Ltd
, , Citation I Ya Fedorenko 2019 IOP Conf. Ser.: Earth Environ. Sci. 395 012061 DOI 10.1088/1755-1315/395/1/012061

1755-1315/395/1/012061

Abstract

The article describes the movement of the fruit as a mathematical pendulum during branch vibrations. A non-linear numerical mathematical model was obtained. The article stated the presence of the fruit's complex movements, including non-sinusoidal oscillations, oscillations-beats, rotational modes, as well as oscillations that have a stochastic appearance. Subresonances are detected at operating frequencies ω≈ pω0 (p=2,3,4,5...); at the same time, the fruit oscillates with almost its own frequency ω0. It is established that the maximum efforts in the stem necessary for its destruction appear at a subharmonic resonance with the frequency ω≈ 3ω0. This mode is recommended as a working one for garden vibration installations.

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10.1088/1755-1315/395/1/012061