The Finite Element Method Applied to Agricultural Engineering: A Review

Velloso, Nara Silveira; Costa, André Luis Gonçalves; Magalhães, Ricardo Rodrigues; Santos, Fábio Lúcio; Andrade, Ednilton Tavares de

doi:10.12944/carj.6.3.08

Cited by 12 publications

(5 citation statements)

References 43 publications

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“…The FEM can be applied in agricultural engineering for the structural analysis of agricultural machinery, implements and agricultural product processing and soil mechanics [1][2][3][4][5][6] The FEM to evaluate the mechanical behavior of coffee plants and obtained results from numerical simulations using a threedimensional model for coffee modeling, which showed the feasibility of predicting displacements of coffee branches from static analyses using finite elements [7].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Behavior of Coffee Branches: an Analysis Using the Finite Element Method

Melo Junior,

Santos,

Scinocca

et al. 2024

Braz. arch. biol. technol.

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The use of computational simulation techniques is an important tool for the coffee harvesting issues, particularly the finite element method. The method is widely used in the structural analysis of agricultural machinery, as well as in the analysis of the stresses and vibrations of coffee branches and peduncles during the harvesting process. The present study aimed to develop three-dimensional finite element models of the plagiotropic branches of the Catuaí Vermelho variety of Arabica coffee in different positions along the orthotropic branches of the plant; considering high-fidelity models. Additionally, by considering the branches' experimental properties (physical-mechanical), the natural frequencies and vibration modes of the branches were determined by means of computer simulations. First, the geometric properties of the coffee branches were obtained by means of two images taken using a professional camera to obtain the input data of the virtual simulation. For the mechanical properties, it was used a semi-analytical digital scale, to obtain the mass of the specimens. The modulus of elasticity was determined using a universal testing machine. The variability in the simulated natural frequencies could be identified, which was on the order of 30% for the first frequency, regardless of the position of the branch in the plant. These values were lower for the other frequencies. Linear regression fits showed a coefficient of determination, and correlation tests were used to verify the relationship between the values obtained numerically and experimentally, which were validated by using experimental data using the modal analysis techniques.

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Section: Introductionmentioning

confidence: 99%

Dynamic Behavior of Coffee Branches: an Analysis Using the Finite Element Method

Melo Junior,

Santos,

Scinocca

et al. 2024

Braz. arch. biol. technol.

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“…With the development of computational means, the application of numerical methods has allowed the solution of problems related to the agricultural sector (Espinosa, 2017; Marín Cabrera and García de la Figal Costales, 2019; Velloso et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Dem Computational Simulation of the Polishing of the Tagua (Phytelephas Aequatorialis) Palm Nuts

MONTES-RODRÍGUEZ,

HERRERA-SUÁREZ,

LÓPEZ-ZAMORA

et al. 2023

INMATEH

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For tagua, the quality of the polishing process is analyzed according to the surface finish of the material, which is obtained manually or through empirically developed machinery that does not include the study of the behavior of the material during the process, which generates an inefficient work. The objective of the work is to determine the macro structural properties of tagua nuts to simulate polishing using the discrete element method. Virtual models were developed and the corresponding physical and mechanical properties were assigned. Among the main results, a tagua nut model was achieved, with m=30.22 g and ρ=1327.3±11.23 kg/m3, friction coefficient for wood of µ_e = 0.411±0.0006 and angle of repose of β=24.644º±0.201º. These properties are the variables used as input data for the DEM model. Finally, the suitability of the Hertz-Mindlin model to simulate the process of mechanized polishing of tagua nuts is demonstrated.

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“…"The exact origin of FEA cannot be predicted, but it is gaining popularity due to advances in computer technology. This technique works on the principle of formulating and solving the problem's hypothetical equations, distinguishing the domain area of the problem, and computing the variables of interest" [7]. "Engineers or developers can use FEA to investigate the behaviour of various input materials before developing mechanical prototypes, assisting both in the manufacturing process and in monitoring and detecting feasibility possible usage or material failures.…”

Section: Introductionmentioning

confidence: 99%

A Finite-element Method of Solution for Optimization of Frame of Tractor Operated Single Row Maize Cobs Picker

Meena

Shrivastava²,

Bhelave³

2023

IJPSS

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Finite element analysis (FEA) is a computational technique that divides complex structures into small elements and solves them numerically using various partial differential equations. In agriculture, engineers can use numerical simulation based on the FEA technique to study the behaviour of various input products in order to optimise the design of any machine without developing a prototype. The present study focused to design and simulates the frame of tractor operated single row maize cobs picker by employing the FEA technique. A 3D-CAD model of the frame of a tractor-operated single row maize cobs picker was created using the Solid Works software, and a static structural test was performed using the FEA technique in the ANSYS version 15.0 workbench software. A special fixture has been developed to calculate the force required to scrape the pulpy material of the leaves in the Universal Testing Machine. According to the simulation results, maximum deformation was observed as 0.051mm while maximum shear stress and Von Mises equivalent stress were found to be 0.246 MPaPa and 1. 47 MPa, respectively at 250 N scraping forces. Additionally, it was noted that the stress values fall within the material's yield strength. The FEA approach was found to be a scientific and highly effective method for designing and simulating the frame of a tractor-operated single row maize cobs picker.

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The Finite Element Method Applied to Agricultural Engineering: A Review

Cited by 12 publications

References 43 publications

Dynamic Behavior of Coffee Branches: an Analysis Using the Finite Element Method

Dynamic Behavior of Coffee Branches: an Analysis Using the Finite Element Method

Dem Computational Simulation of the Polishing of the Tagua (Phytelephas Aequatorialis) Palm Nuts

A Finite-element Method of Solution for Optimization of Frame of Tractor Operated Single Row Maize Cobs Picker

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