Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/28982
metadata.artigo.dc.title: Simulation of the dynamic behavior of the coffee fruit-stem system using finite element method
metadata.artigo.dc.creator: Santos, Fábio Lúcio
Queiroz, Daniel Marçal de
Valente, Domingos Sárvio Magalhães
Coelho, André Luiz de Freitas
metadata.artigo.dc.subject: Coffee harvesting
Mechanization
Mechanical vibrations
Colheita de café
Mecanização
Vibrações mecânicas
metadata.artigo.dc.publisher: Universidade Federal de Santa Maria
metadata.artigo.dc.date.issued: 2015
metadata.artigo.dc.identifier.citation: SANTOS, F. L. et al. Simulation of the dynamic behavior of the coffee fruit-stem system using finite element method. Acta Scientiarum. Technology, Maringá, v. 37, n. 1, p. 11-17, Jan./Mar. 2015.
metadata.artigo.dc.description.abstract: Mechanical harvesting can be considered an important factor to reduce the costs in coffee production and to improve the quality of the final product. Coffee harvesting machinery uses mechanical vibrations to accomplish the harvesting. Therefore, the determination of the natural frequencies of the fruit-stem systems is an essential dynamic parameter for the development of mechanized harvesting system by mechanical vibrations. The objective of this study was to develop a three-dimensional finite element model to determine the natural frequencies and mode shapes of the coffee fruit-stem systems, considering different fruit ripeness. Moreover, it was carried out a theoretical study, using the finite element three-dimensional model, based on the linear theory of elasticity, for determining the generated stress in a coffee fruit-stem system, during the harvesting process by mechanical vibration. The results showed that natural frequencies decrease as the ripeness condition of the fruit increases. Counter-phase mode shape can provide better detachment efficiency considering the stress generation on coffee fruit-stem system during the harvesting by mechanical vibrations and presented a difference greater than 40 Hz between the natural frequencies of the green and ripe fruit.
metadata.artigo.dc.identifier.uri: http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/19814
http://repositorio.ufla.br/jspui/handle/1/28982
metadata.artigo.dc.language: en_US
Appears in Collections:DEG - Artigos publicados em periódicos

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