Transportation of a material particle by the operating mechanism of an agricultural machine in the form of a vertical screw confined by a coaxial stationary cylinder

Pylypaka, Serhii; Klendii, Mykola

doi:10.31548/machenergy.13(3).2022.73-80

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…The analysis strongly suggests that the results of the presented research are not yet sufficiently used in the construction of modern tools for preparing and distributing feed Pylypaka et al, 2022;Trokhaniak, 2022).…”

Section: Resultsmentioning

confidence: 98%

Untitled

2023

Tehnìka ta energetika

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The lack of simple analytical physical and mathematical models complicates the investigation of the interaction of tillage working bodies with the soil when designing new structures. To simplify these calculations within the framework of agricultural machinery engineering, it is necessary to use software that integrates the development of agricultural mechanics. The purpose of this study was to model and investigate the interaction of tillage working bodies with the soil using Simcenter STAR-CCM+. For this, the volumetric fluid method and the discrete element method were used. When creating the model, the main physical and mechanical properties of the soil were used. As a result, the simulation of the interaction of the most common tillage working bodies, such as a tooth of a duck-foot cultivator, a disc harrow on an elastic stand, a subsoil cultivator (chisel plough), a mouldboard plough, and a smooth roller, was modelled using volumeof-fluid method and discrete element method. The application of the volume-of-fluid method helped establish a nonprimary flow of the soil relative to the working body, while the discrete element method determined the distributions of velocities and forces of interaction of soil particles. It was found that both proposed methods can be useful for modelling the interaction of the tillage working body with the soil in Simcenter STAR-CCM+. Complementing each other, they create a general picture of the physics of the interaction of the tillage tool with the soil. Using Simcenter STAR-CCM+, the interaction process was visualized and the height of the formed ridges and furrow depths and their location in space were

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Section: Resultsmentioning

confidence: 98%

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2023

Tehnìka ta energetika

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Logical-probabilistic model of the reliability of means for preparing and distributing fodder

Nоvitskiy,

Banniy,

Novitskyi

2023

Tehnìka ta energetika

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Countries with a developed agricultural sector of the economy use modern advances in industry and computer technology in precision animal husbandry. At the current stage of animal husbandry development, both in global practice and in Ukraine, for the preparation of fodder mixtures, means for preparation and distribution of fodder are becoming more and more widespread, which combine the operations of loading, grinding, mixing, transportation and dosed distribution of fodder mixtures. The purpose of the presented article is to assess and ensure the reliability of the operation of the means for preparing and distributing fodder due to the logic-probabilistic modeling of failures of the feed mixture unloading mechanism as a subsystem of the "Man-Machine-Environment" technical system. The results of theoretical and experimental research are a continuation of previous work and are aimed at increasing the efficiency of use and ensuring the reliability of machines and equipment for animal husbandry. The obtained results of theoretical and experimental studies of reliability based on logical-probabilistic modeling of means for preparing and distributing feed as complex technical systems depending on the influence of the components "man-operator", "machine", "environment". The shortest paths of failures and the minimum cross-sections of their prevention for the research objects were analyzed. In order to prevent the failure of the human-operator component of the system, it is necessary to provide sufficient qualification of the personnel, foresee the possible occurrence of errors and ensure their timely elimination. In order to prevent failures of the feed mixture unloading mechanism, it is necessary to timely control and adjust the condition of parts during operation and when restoring performance. It has been established that the probability of failure of the mechanism will be less important, provided that the probability of elimination of failures due to insufficient qualification of the operator and failure of drive parts is 0.2. An increase in the probability of failure of the operator under the condition of insufficient qualification from 0.5 to 0.9 will lead to an increase in the probability of failure as a result of a change in the conveyor tension and the impossibility of adjusting the conveyor tension, and at 0.9 the probability of failure of the mechanism will be 0.046. The practical significance of the results lies in the possibility of investigating the probability of failure of the feed mixture unloading mechanism based on the reliability of the components of the means for preparing and distributing feed, including the hydraulic cylinder, drive parts, and conveyor belts

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Transportation of a material particle by the operating mechanism of an agricultural machine in the form of a vertical screw confined by a coaxial stationary cylinder

Cited by 2 publications

References 13 publications

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Logical-probabilistic model of the reliability of means for preparing and distributing fodder

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