Determination of Plasticity for Pre-Deformed Billet

Solona, Olena; Derevenko, Iryna; Kupchuk, Igor

doi:10.4028/www.scientific.net/ssp.291.110

Cited by 12 publications

(8 citation statements)

References 4 publications

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“…The undermined layer of potato bed when moving on a share-board surface adjoins it with all its points [4], [6,7]; 3. A layer is a deformable body and has the ability to resist deformation [7], [14,15].…”

Section: Methodsmentioning

confidence: 99%

“…From formulas (1,2) it can be seen that the forces F 1 and N 1 depend on the blade parameters: angle ε 1 and γ 1 ; grip width B; shape and size of the curve of the orthogonal cross section of the blade (the form of the equation ρ = ρ(ε)); from soil friction coefficient to steel f [14]; soil properties k.…”

Section: Forces Analysis Of Blade Movement In a Potato Heapmentioning

confidence: 99%

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The Heap Parts Movement on the Shareboard Surface of the Potato Harvesting Machine

Hrushetskyi

Yaropud

Kupchuk

et al. 2021

FWIAFE

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The article is devoted to the problem of the reduction of tubers mechanical damages while providing qualitative indicators of the potato heap separation process. Theoretical and experimental dependences of the influence of design and kinematic parameters of the machine operation on the quality performance are obtained. Within the field of experimental studies, a field installation was made to investigate the potato harvester as a whole on the efficiency of separation, the degree of damage, the magnitude of losses and the total capacity for aggregation. Comparison of the results of theoretical and experimental studies showed that the developed mathematical model of the process of separation of potato heap is adequate.

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Section: Methodsmentioning

confidence: 99%

Section: Forces Analysis Of Blade Movement In a Potato Heapmentioning

confidence: 99%

The Heap Parts Movement on the Shareboard Surface of the Potato Harvesting Machine

Hrushetskyi

Yaropud

Kupchuk

et al. 2021

FWIAFE

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“…Substituting the equation of the strain rate, that occurs in the M-body (9), and the equation of the strain rate, that occurs in the HStV body (17) in equation ( 29), we shall finally obtain the equation of the strain rate, that occurs in the M-HStV-body:…”

Section: Fig 4 Rheological Model Of Maize Grain Germmentioning

confidence: 99%

“…The initial data for modelling the processes of mechanical grinding are information on the structuralmechanical properties of the processable object [7,8], the kinetics of deformation [9], the critical values of the internal force factors at which the destruction of the structure occurs [10,11]. The process and the nature of the destruction of the grain result from the modes of its contact interaction with the executive body of the crusher, including the configuration and geometric parameters of the impactors.…”

Section: Introductionmentioning

confidence: 99%

Research of the Rheological Parameters of Feed Grain in the Process of the Combined Impact-Cutting Grinding

Kupchuk¹,

Poberezhets²,

Kravets³

2021

Engineering, Energy, Transport Aic

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Taking into consideration current realities and various factors, which create difficulties for the effective functioning of Ukraine’s national economic system, the Agro-Industrial Complex of Ukraine acts as the most stable part of it, that is characterized by conservatism and is one of the main and stable cross-sectoral formations due to revenues. However, despite the strategic priority of the AIC, the high level of energy consumption by domestic producers does not enable providing an appropriate level of competitiveness of Ukraine’s AIC in domestic and foreign markets, at the same time the rationalisation of energy use necessitates the substantiation of the energy-saving variant of its development by implementing energy-efficient machines and technologies in the system of feed preparation and feeding animals. In the technological process of feed preparation, the share of energy consumption for grinding can be more than 50%. Thus, it becomes obvious that the profitability and competitiveness of the livestock industry largely depend on the energy efficiency of realizing this technological operation, and the reduction of energy intensity in this process is an urgent task. Modelling energy-saturated mechanical processes, particularly for the grinding operation, it is necessary to consider structural-mechanical properties of the product, its ability to deform in different modes of interaction with the executive body of the technological machine. The six-link mechanical-rheological model, which is built by combining the simplest models of rheological bodies and enables reproducing the structural and mechanical properties of the object of processing – maize grain with the required degree of reliability, has been offered in the article. Theoretical research of the rheological characteristics of the material, including the assessment of the relative deformation of the maize grain in the grinding process using he impact-cutting method depending on the moisture content and internal force factors, has been conducted. In the future, the obtained results will be used to evaluate the parameters of plastic and elastic absolute deformations in the material while studying the kinetics of the grinding process.

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“…The uniqueness of this method is that it allows implementing more patterns of traditional stamping under conditions of local deformation [6]. The deformation zone and favorable deformation conditions at the contact between the tool and the billet ensure significant reduction in the deformation force and equipment power as compared to traditional stamping [7,8]. This allows cold pressing of steels and alloys to obtain products of complex profile with developed thin-walled elements, which is difficult to do using other methods of pressure metal treatment (PMT).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Tubular and Cylindrical Billets Stamping by Rolling Process with the Use of Computer Simulation

Matvijchuk

Shtuts

Kolisnyk

et al. 2021

Period. Polytech. Mech. Eng.

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Forming of blanks during stamping by rolling (RS) is possible according to technological schemes of deposition, landing, direct and reverse extrusion, distribution and compression, etc. Controlling the relative position and shape of the deformed tool allows you to control the direction of flow of the workpiece material and the nature of its formation, as well as the stress-strain state of the material. The complexity and versatility of RS processes necessitate computer modeling for sound management of basic technological parameters.Physical experimental as well as computer modeling of the RS process in the DEFORM-3D software package was performed in the work.According to the results of computer simulation, the distribution of deformation components, stresses and temperatures in the deformed workpiece area was obtained, and using the Cockroft-Latham criterion, the destruction of metals during cold deformation was also predicted.Physical modeling of the SR process on lead blanks confirmed the nature of their deformation, obtained by computer simulation. And the analysis of the stress-strain state of the material based on the results of measurements of the deformed grid confirmed the validity of the appointment of boundary conditions in computer simulation.This approach is suitable for modeling by the method of SR of any metal models, for which it is necessary to know their mechanical characteristics, including boundary deformation curves.

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Determination of Plasticity for Pre-Deformed Billet

Cited by 12 publications

References 4 publications

The Heap Parts Movement on the Shareboard Surface of the Potato Harvesting Machine

The Heap Parts Movement on the Shareboard Surface of the Potato Harvesting Machine

Research of the Rheological Parameters of Feed Grain in the Process of the Combined Impact-Cutting Grinding

Investigation of the Tubular and Cylindrical Billets Stamping by Rolling Process with the Use of Computer Simulation

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