Modeling the dynamics of vibratory separator of the drum type with concentric arrangement of sieves

Topilnytskyy, Volodymyr; Rebot, Dariya; Сокіл, М. Б.; Velyka, Oksana; Liaskovska, Solomiya; Verkhola, I.I.; Kovalchuk, Roman; Dzyubyk, Lyudmyla

doi:10.15587/1729-4061.2017.95615

Cited by 20 publications

(11 citation statements)

References 2 publications

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“…Mathematical models of bending oscillations of the studied system assume that torsional oscillations cause a small amount of periodic action on the bent. The main parameters of this action (primarily frequency) can be determined on the basis of the main characteristics of the screw: its running mass, the moment of inertia, elastic characteristics of the material (Stotsko et al, 2000) or by partial processing of experimental data (Topilnysky et al, 2017;Hevko et.al., 2020).…”

Section: Methodsmentioning

confidence: 99%

Research of Non-Resonant Oscillations of the "Telescopic Screw - Fluid Medium" System

Lyashuk

Hevko

Hud

et al. 2022

INMATEH

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In the article it is substantiated the value of the angular speeds of rotation of the auger screw, which leads to the breakdown of its lateral vibrations. The dependences describing the law of change of amplitude or natural frequency at slowly variable length of the telescopic screw are deduced. Based on the Van der Paul’s method, in the developed system differential equations are obtained that determine the laws of change of amplitude and frequency of the wave process in the system of a telescopic propeller. It is established that for nonresonant oscillations for this system the main parameters of bending oscillations are a continuous flow of bulk medium - the screw does not depend on its small torsional oscillations and external periodic perturbation. The analysis of the given regression equations shows that to reduce the torque of the auger it is necessary to reduce the frequency of its rotation and the angle of the conveyor. The constructive diagram and the results of theoretical calculations for assessing the influence of constructive-kinematic parameters on the torque indicators of the telescopic screw conveyor are presented.

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Section: Methodsmentioning

confidence: 99%

Research of Non-Resonant Oscillations of the "Telescopic Screw - Fluid Medium" System

Lyashuk

Hevko

Hud

et al. 2022

INMATEH

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“…In particular, reducing the amplitude and angle of the sieve reduces the impact force of the bulk material and can prevent damage to the sieve in the case of separation of heavy and sharp materials [7]. Most studies give a partial idea of the movement of the bulk medium through the sieve of the vibrating separator [8][9][10][11][12][13][14][15][16][17], so it is proposed to consider the bulk material on the basis of an integrated approach, characterizing the material layer with some generalized parameters and taking it as a solid elastic body. Based on the above model, it is proposed to investigate the relationship between the velocity of bulk raw materials along the sieve of the vibrating separator wand its amplitude-frequency characteristics.…”

Section: Review Of Modern Information Sources On the Subject Of The P...mentioning

confidence: 99%

Influence of the velocity of the medium layer on its dynamicparameters in the process of vibration separation

Rebot¹,

Babii²

2022

UJMEMS

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A review of recent research in the field of vibration separation of bulk media has been done. It was found that the productivity of the separation process is influenced not only by the design characteristics of the vibrating separator, in particular the length, angle and capacity of the working housing, but also the dynamic processes that occur in bulk medium during separation. The efficiency of the separation process significantly depends on the mutual influence of the velocity of the bulk medium along the separator sieve and its amplitude-frequency characteristics. Based on the review, the relevance of further study of these parameters was established. Using the methods of nonlinear mechanics, a mathematical model of the motion of the layer of bulk medium on the sieve of the vibrating separator was built. The layer of bulk medium was modeled by an elastic beam, which is in contact elastically, rigidly, or as hinged. Graphical dependences of the influence of the frequency of external perturbation and the velocity of the bulk medium along the sieve of the separator on its oscillation amplitude were obtained. The obtained mathematical model and graphical dependences showed that small velocities of the medium layer lead to an increase in the amplitude of oscillations of the bulk medium and a decrease in its frequency of oscillations, which increases the permeability of medium particles and increases the productivity of the separation process. The obtained researches allow us to increase the efficiency of the separation process, to regulate the processes that take place in the bulk medium and to increase the speed of its passage through the sieve openings. The constructed mathematical model can serve as a basis for further studies of the influence of changes in the physical and mechanical characteristics of the bulk medium on its dynamic parameters in the process of vibration separation.

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“…The steps presented determine the need to characterize the relationship between the parameters of the model under study. According to the basic principles of modeling, the technological process can be represented as a dynamic system [5,6] (Fig. 1), where: Inp -the flow of input data, defined by the sum of input parameters that describe the process, and also responsible for the characteristics of each element in particular:…”

Section: Modeling Of the Technological Process In Flexsimmentioning

confidence: 99%

“…The output data analysis (Ot) should also be compared with the predicted results. So the engineer has a major role in the modeling of whole technological processes [6].…”

Section: Modeling Of the Technological Process In Flexsimmentioning

confidence: 99%

Forming of the Optimal Parameters Complex for the Production Process by Means of Flexsim

Gumen¹,

Ljaskovska²,

Ujma³

2020

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo

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Global competition is setting new rules for the release and sale of products. Success is possible thanks to the introduction of effective tools in modern information technologies, which allow simulation of the process of production and supply, calculate the time spent and eliminate problematic issues with production, etc. Production planning, the first stage of product creation, is possible through the involvement of modeling. Our work aims to analyze the main stages of creating a simulation model in the FlexSim environment, to determine the interconnected impact of different parameters on the work of individual elements and the technological system in general. The automated technological process is considered as a multi-parameter system where input and output are interconnected. Each element of the process can be defined as a separate model, where the input of the initial data takes place, and at its output, we get the expected action that was programmed. The model created is considered by FlexSim as a system consisting of related parameters. The formed complex of optimal parameters in the production process is applicable, in particular, to the construction industry when solving decision-making tasks.

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Modeling the dynamics of vibratory separator of the drum type with concentric arrangement of sieves

Cited by 20 publications

References 2 publications

Research of Non-Resonant Oscillations of the "Telescopic Screw - Fluid Medium" System

Research of Non-Resonant Oscillations of the "Telescopic Screw - Fluid Medium" System

Influence of the velocity of the medium layer on its dynamicparameters in the process of vibration separation

Forming of the Optimal Parameters Complex for the Production Process by Means of Flexsim

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