Terms of the stability for the control valve of the hydraulic impulse drive of vibrating and vibro-impact machines

Iskovych-Lototsky, Rostislav; Kots, Ivan; Ivanchuk, Yaroslav; Ivashko, Evheniy I.; Gromaszek, Konrad; Mussabekova, Aisha; Kalimoldayev, Maksat

doi:10.15199/48.2019.04.04

Cited by 6 publications

(8 citation statements)

References 18 publications

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“…The mathematical model of the pile driving technology involving a HID-based VI device, which is represented by the systems of equations (1-13) and additionally by the Navier-Stokes hydrodynamics equations (Iskovych-Lototsky et al, 2018b;Iskovich-Lototsky et al, 2019), was implemented according to numerical modelling methods based on software systems FlowVision (Iskovich-Lototsky et al, 2019), Matlab Simulink (Iskovych-Lototsky et al, 2018aShatokhin et al, 2019) powered by computing clusters of the V.M. Glushkov CS Institute of Cybernetics of the NAS (National Academy of Sciences) of Ukraine (Yarovyy et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Modelling of Piling Technology by Vibroimpact Device with Hydropulse Drive

Ivanchuk

Manzhilevskyy

Belzetskyi

et al. 2022

Scientific Horizons

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Based on the analysis of the developed mathematical model, this paper proposes optimal operating modes of the vibroimpact device to ensure the intensification of driving construction piles. It is an original design of a modern, highly efficient device for driving construction piles, equipped with a compact, powerful hydraulic impulse drive unit. To develop a mathematical model of the construction pile driving technology, the following methods were used: mechanoreological phenomenology, hydrodynamics, and generalised laws of mechanics. Mathematical models of the dynamics of technological processes of driving construction piles with a vibroimpact device are improved based on a hydraulic impulse drive unit in the form of a spatial non-stationary formulation of the problem and integral equations of dynamic characteristics of the moving elements of the drive unit. The study obtained the distribution of the pressure and velocity of the working fluid in the hydraulic unit of the vibroimpact device, as well as changes in the kinematic parameters of the elements of the technological equipment based on the mathematical model developed by the finite volume method, using numerical modelling and high-performance computer systems. Optimal modes of operation of a hydraulic impulse drive of a vibroimpact device are proposed to provide an intensification of the construction pile driving technology. It was found that when low-frequency vibration is applied, the driving of construction piles is intensified. Application of a hydraulic impulse drive that is based on two-stage vibration excitation allowed implementing the vibroimpact modes of the device. The average pile driving speed with a vibroimpact interaction is five times higher compared to conventional driving methods

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Section: Discussionmentioning

confidence: 99%

Modelling of Piling Technology by Vibroimpact Device with Hydropulse Drive

Ivanchuk

Manzhilevskyy

Belzetskyi

et al. 2022

Scientific Horizons

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“…In [13], an original method of "particles in cells" was proposed, which combines the advantages of the Lagrangian and Euler approaches [14]. The solution area in this method is divided by a fixed (Eulerian) grid.…”

Section: Literature Reviewmentioning

confidence: 99%

Modeling of Wave Processes in Hydraulic Drive Systems of Technological Equipment

Ivanchuk,

Belzetskyi,

Ozeranskyi

et al. 2024

JES

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The article, based on the performed theoretical research, solves the essential scientific and technical problem of increasing the accuracy of identification of wave processes in a hydrodynamic system (pipeline) by developing a generalized method of mathematical designing of the dynamics of a continuous viscous and weakly compressed fluid in the hydrodynamic system pipeline based on the Navier-Stokes equation. Amplitude-frequency characteristics represent parameters of wave processes in the hydraulic drive system. A partial solution of Navier–Stokes equations, under zero initial conditions, is proposed in the form of four-pole equations, the components of which are represented in the form of the Laplace image of the corresponding relative pressure and flow coordinates and the the hydraulic line parameters determine the four-pole elements themselves It is also proposed to determine the values of the four-pole elements based on time constants and relative damping coefficients on the frequency characteristics of hydraulic lines with distribution parameters based on the condition of equality of the first resonant frequencies and amplitudes (at these frequencies). With the help of the developed methods, the primary dynamic parameters of the amplitude-frequency characteristics of continuous viscous and weakly compressed liquid in the pipeline of hydraulic systems for different flow ranges. This made it possible to achieve the following practical results: the high degree of adequacy of the developed mathematical model indicates an increase in the reliability of determining the operating characteristics when designing a hydraulic drive. The high accuracy of determining the first resonant frequencies and amplitudes allows for creating a hydraulic pump with improved operational characteristics.

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“…The concept of an idealized Bingham fluid is convenient for practice, as a lot of real liquid mixtures are very close to this type: construction mixes, concrete mixtures, bitumen (in a certain temperature range), drilling fluids, oil paints, etc. Works [16][17] are dedicated to the flow researches of rheologically complex mediums.…”

Section: Introductionmentioning

confidence: 99%

“…A generally recognized approach to modeling of fluid pulsations in pumping systems is the method of asymptotic representation of solutions in powers of small parameter [19] in the analysis of basic harmonic components of oscillations. It is based on the derivation of more usual relations from their general mathematical description passing to spectral representations [17] and ideas of the equivalent linearization [20], but it does not allow finding an acceptable mathematical model for the vibration systems. This leads to necessity of development of new methods and approaches for development of the reference mathematical models of fluid motion dynamics for a wide range of peristaltic pumping systems.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Processes Modeling in a Peristaltic Pump with a Hydraulic Drive for the Bingham Fluid

Dvirna¹,

Shatokhin²,

Ivanchuk³

et al. 2022

Adv. Sci. Technol. Res. J.

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At present peristaltic pumps are widely used in many branches of industry and national economy. Simplicity of construction, processability and possibility of pumping liquids with big quantity of solid particles are the main advantages while using peristaltic pumps. Therefore development of methods of rational choice of parameters at designing of peristaltic pumps is the actual problem. To develop universal mathematical models of dynamic processes in peristaltic pumps for definition of rational technical parameters. In dynamic processes we propose to use differential equations of motion in the Lagrange form, where the angle of rotation of the pump rotor is taken as a universal coordinate. Mathematical model of dynamic processes in peristaltic pump with hydraulic drive has been created on the base of differential equation. The function of resistance forces caused by gravity forces of mixture particles in the hose reel has been determined. On the basis of the non-linear model of the resistance forces to the flow of the fluid Bingham method of constructing the dependence of the pressure drop on the angular velocity of the rotor to determine the resistance forces to the flow of the fluid has been proposed. The result of dynamic processes simulation is the determination of interrelationship of technological parameters of the device functioning: the velocity of the medium and pump performance is increasing at reducing the length of the diverting hose and reducing the height of its rise; a significant influence on the average speed has plastic viscosity of the environment; a significant change in the yield strength has an insignificant impact on the speed.

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Terms of the stability for the control valve of the hydraulic impulse drive of vibrating and vibro-impact machines

Cited by 6 publications

References 18 publications

Modelling of Piling Technology by Vibroimpact Device with Hydropulse Drive

Modelling of Piling Technology by Vibroimpact Device with Hydropulse Drive

Modeling of Wave Processes in Hydraulic Drive Systems of Technological Equipment

Dynamic Processes Modeling in a Peristaltic Pump with a Hydraulic Drive for the Bingham Fluid

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