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The low energy efficiency and excessive power of electric motors of large-scale vibrating machines for processing bulk materials motivated a new design of the inertial drive. This drive consists of one motor and two coaxial unbalanced masses, whose rotational frequencies are related in the ratio 2:1. This approach allows for a generation of the excitation force with variable amplitude and frequency, which changes depending on the inertial characteristics and shaft rotation frequency and does not relate to the phase difference of the unbalanced masses. Because of this, the symmetry axis of the resulting vector hodograph can be changed. The spectral composition of the exciting force up to 200 Hz contains higher harmonics, the energy share of which is 25.4% from the 2nd harmonic and 14.1% from the 3rd and higher harmonics that correspondingly improves bulk material treatment in comparison to single-frequency vibrators. The finite element model is used for checking the strength capacity of the most loaded units of a dual-frequency drive. Its use allows the realization of complex trajectories of motion that are more technologically efficient for variable parameters of the treated media and energy saving in sieving screens and other vibrating machines.
Volodymyr Gursky; Igor Kuzio; Pavlo Krot; Radoslaw Zimroz. Energy-Saving Inertial Drive for Dual-Frequency Excitation of Vibrating Machines. Energies 2020, 14, 71 .
AMA StyleVolodymyr Gursky, Igor Kuzio, Pavlo Krot, Radoslaw Zimroz. Energy-Saving Inertial Drive for Dual-Frequency Excitation of Vibrating Machines. Energies. 2020; 14 (1):71.
Chicago/Turabian StyleVolodymyr Gursky; Igor Kuzio; Pavlo Krot; Radoslaw Zimroz. 2020. "Energy-Saving Inertial Drive for Dual-Frequency Excitation of Vibrating Machines." Energies 14, no. 1: 71.
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Volodymyr Gursky. Implementation of dual-frequency resonant vibratory machines with pulsed electromagnetic drive. PRZEGLĄD ELEKTROTECHNICZNY 2019, 1, 43 -48.
AMA StyleVolodymyr Gursky. Implementation of dual-frequency resonant vibratory machines with pulsed electromagnetic drive. PRZEGLĄD ELEKTROTECHNICZNY. 2019; 1 (4):43-48.
Chicago/Turabian StyleVolodymyr Gursky. 2019. "Implementation of dual-frequency resonant vibratory machines with pulsed electromagnetic drive." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 4: 43-48.
The two-mass resonant vibro-impact module is presented as the rod system with cylindrical intermediate supports. The corresponding design diagram is constructed. Based on the finite element method, the frequency of free oscillations is defined for the corresponding location of the intermediate supports. A stress-strain state of the elastic element is considered. The stiffness of the intermediate supports is defined by solving the contact problem between the cylindrical rod supports and the flat spring. The dynamics of the vibro-impact rod system with multiple natural frequencies is analyzed taking into account the contact stiffness of the intermediate supports. The determination of contact and equivalent stresses occurring during the operation of the vibro-impact rod system is performed.
Volodymyr Gursky; Igor Kuzio. Dynamic Analysis of a Rod Vibro-Impact System with Intermediate Supports. Acta Mechanica et Automatica 2018, 12, 127 -134.
AMA StyleVolodymyr Gursky, Igor Kuzio. Dynamic Analysis of a Rod Vibro-Impact System with Intermediate Supports. Acta Mechanica et Automatica. 2018; 12 (2):127-134.
Chicago/Turabian StyleVolodymyr Gursky; Igor Kuzio. 2018. "Dynamic Analysis of a Rod Vibro-Impact System with Intermediate Supports." Acta Mechanica et Automatica 12, no. 2: 127-134.
The problems of synthesis and substantiation of elasticity parameters of the resonant vibratory device with electromagnetic drive and one flat spring are considered. At first, the harmonic systems with oscillation frequencies of 50 Hz and 100 Hz were investigated. Then, various asymmetric piecewise linear characteristics of elasticity were carried into effect on one flat spring using auxiliary intermediary fixed cylindrical supports. Due to this, the corresponding vibro-impact operation modes were obtained. The resonant systems characterized by improved functioning efficiency were carried into effect using the new technique of optimization synthesis of elasticity parameters. The resonant systems being investigated were implemented in practice. The basic experimental investigations of their kinematic, dynamic and energetic parameters were carried out. The fundamental result of the investigation consists in confirmation of the improved dynamic efficiency of vibro-impact systems with pulsed electromagnetic excitation designed according to the new technique. The proposed systems may be used in technological processes of materials compaction and screening, of surface treatment of machine parts and in processes associated with nanotechnology.
Volodymyr Gursky; Igor Kuzio; Vitaliy Korendiy. Optimal Synthesis and Implementation of Resonant Vibratory Systems. Universal Journal of Mechanical Engineering 2018, 6, 38 -46.
AMA StyleVolodymyr Gursky, Igor Kuzio, Vitaliy Korendiy. Optimal Synthesis and Implementation of Resonant Vibratory Systems. Universal Journal of Mechanical Engineering. 2018; 6 (2):38-46.
Chicago/Turabian StyleVolodymyr Gursky; Igor Kuzio; Vitaliy Korendiy. 2018. "Optimal Synthesis and Implementation of Resonant Vibratory Systems." Universal Journal of Mechanical Engineering 6, no. 2: 38-46.
Volodymyr Gursky, Igor KuzioWe present the scheme of realization of a vibroimpact system with one flat spring and locally focused mass. The means of implementation of asymmetric piecewise linear elastic characteristic is the use of two intermediate cylindrical supports. We calculated the bending and contact stresses that take into account the asymmetry of change in the elastic characteristic and instantaneous displacement of the local mass. The parametric dependency is taken into account of the contact rigidity between the cylindrical support and the flat spring on the displacement of the local mass. This is carried out in order to assess in the course of dynamic analysis the stressed state of a flat spring under conditions of implementation of elastic characteristic. The contact rigidity is taken into account through the change in own oscillations frequency of the spring. We numerically solved the dynamic problem and obtained the ratio between kinematic characteristics (displacement and acceleration) and parameters of the stressed state (bending and contact stresses).The contact stresses are nonlinearly dependent on displacement, the bending –linearly. The strength margin factors by the stresses were defined, as well as the equivalent strength margin factor and the lifetime of the rod as the function of effort of perturbation. The equivalent strength margin factor takes into account the joint action of bending asymmetric and contact stresses. The obtained formulas realize the method of analysis of the stressed state under conditions of vibroimpact loadings. The method may be successfully applied in the course of design and synthesis of resonant vibroimpact systems and modes.
Volodymyr Gursky; Igor Kuzio. Strength and durability analysis of a flat spring at vibro-impact loadings. Eastern-European Journal of Enterprise Technologies 2016, 5, 4 -10.
AMA StyleVolodymyr Gursky, Igor Kuzio. Strength and durability analysis of a flat spring at vibro-impact loadings. Eastern-European Journal of Enterprise Technologies. 2016; 5 (7 (83)):4-10.
Chicago/Turabian StyleVolodymyr Gursky; Igor Kuzio. 2016. "Strength and durability analysis of a flat spring at vibro-impact loadings." Eastern-European Journal of Enterprise Technologies 5, no. 7 (83): 4-10.