Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/58540
Título: Modelagem e validação de um cafeeiro por elementos finitos utilizando escaneamento 3D e análise modal experimental
Título(s) alternativo(s): Finite element modeling and validation of a coffee plant using 3D scanning and experimental modal analysis
Autores: Magalhães, Ricardo Rodrigues
Santos, Fabio Lúcio
Magalhães, Ricardo Rodrigues
Silveira, Henrique Leandro
Velloso, Nara Silveira
Silva, Evandro Pereira da
Silva, Sandro Pereira da
Palavras-chave: Método dos elementos finitos
Propriedades dinâmicas
Colheita de café
Propriedades mecânicas
Finite element analysis
Dynamic properties
Coffee harvesting
Mechanical properties
Data do documento: 13-Nov-2023
Editor: Universidade Federal de Lavras
Citação: SILVA, D. S. e. Modelagem e validação de um cafeeiro por elementos finitos utilizando escaneamento 3D e análise modal experimental. 2023. 74 p. Dissertação (Mestrado em Engenharia de Sistemas e Automação)–Universidade Federal de Lavras, Lavras, 2023.
Resumo: Coffee is one of the most significant products in the Brazilian economy, with the country being the world's largest coffee exporter. Studies focused on simulations in the stages of mechanized harvesting have been of great interest, both in academia and in the agro-industry. In this context, the primary objective of this work is to obtain a computational model of coffee branches, employing scanning techniques and experimental validation through modal analysis. To achieve this, branches of a Red Catuai coffee plant were scanned and computationally simulated to obtain a computational model representing the static and dynamic behavior of the branches. Prior to this, an evaluation was performed to assess how representative the scanned model was compared to experimentally obtained data. The specific mass and elasticity modulus of the selected branches were obtained in the laboratory and used as parameters for the simulations. To obtain the results of static and modal analyses, the geometric models of the branches were simulated using the Finite Element Method (FEM). Validation of the adopted procedure was carried out through experiments, which confirmed that the first three vibration modes of the tested branches were similar, with deviations ranging from 2 to 20%. The adopted statistical analysis indicated a tendency of similar behavior between the simulated branches and the experimental results. Based on the results obtained, it was concluded that it is possible to predict the dynamic and static behavior of coffee branches through three-dimensional scanning and numerical simulations using FEM. This can be considered a technological advancement, as simplified models based on geometric coordinates are typically used.
URI: http://repositorio.ufla.br/jspui/handle/1/58540
Aparece nas coleções:Engenharia de Sistemas e automação (Dissertações)



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