Nonlinear Dynamics of a Vibrating Machine with an Electrodynamic Actuator

Асташев, В. К.; Pichugin, K. A.; Semenova, E. B.

doi:10.3103/s1052618821010064

Cited by 2 publications

(2 citation statements)

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“…The authors propose a new method of milling and a new design of a vibration mill screen with oriented vibrations of a curved acting face. As a result, the grinding balls of different diameters exert the oriented effects on the particles being milled [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Conveyor lines can be tens kilometers long, and the length of one conveyor can exceed one kilometer. The prompt detection of faults is difficult without special facilities [7,8] as it is necessary to inspect each roller in the conveyor line, and the number of the rollers may exceed six thousand [9,10]. The automated fire extinguishment systems are only provided at the power-drive and tension stations of conveyors and are absent along the conveyor flight.…”

Section: Introductionmentioning

confidence: 99%

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The process of the mill feed flow along a curved acting face of a vibration mill screen

Bardovsky¹,

Gorbatyuk²,

Gerasimova³

et al. 2023

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The article describes the studies into the process of the mill feed flow along a curved vibratory surface under the action of oriented vibrations. The differential equation of the relative movement of a grinding body in a layer of a milled material along the surface are given. The differential equation of a particle motion is obtained. The equations prove that at a certain ratio of the vibration parameters, the grinding balls of different sizes when moving upward in a milled mass have limit heights. It is found that the best size distribution of the grinding balls on the vibratory surface exists at a certain ratio of the vibration amplitude and frequency and the tangent slope of the acting face. The plotted experimental curves prove that the maximum efficiency of the process is achieved at the acting face vibration amplitude in a range of 0.6-0.8 mm and vibration frequency in a range of 48-54 Hz, and is 8-12% higher than at the amplitudes and frequencies beyond these ranges.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The process of the mill feed flow along a curved acting face of a vibration mill screen

Bardovsky¹,

Gorbatyuk²,

Gerasimova³

et al. 2023

View full text Add to dashboard Cite

show abstract

Study of the phase characteristics of vibration sensors and conditions of orthogonalization of their measuring basis for the systems of vibration control and vibration testing of materials

Zhdanov

2023

Zavod. lab., Diagn. mater.

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To identify the most vibration-sensitive structures of the materials during vibration tests, it is necessary to determine the vibration vector in an orthogonal basis The effectiveness of the tests depends on the accuracy of the vector measurement. The transverse sensitivity of tri-axial vibration transducers, which have found vast application in various vibration measuring and material testing systems, leads to increased measurement errors and limits the frequency range of measurements. The errors can be reduced to almost zero using the proposed method of electronic orthogonalization, which involves rotation of the sensitivity vectors until they coincide with the orthogonal basis, resulting in zero transverse sensitivity. This approach has been successfully developed and works rather well in the low frequency band of the vibration transducer frequency response, wherein the amplitude-characteristics are linear and there is no phase shift in the channels. An emphasis is made on the influence of the phase characteristics of vibration sensors on the formation of orthogonalizing matrices that determine the requirements for an orthogonalizer. The structure of the installation for automated recording amplitude-frequency and phase-frequency responses of the vibration transducer, methodology and results of experimental study of a tri-axial piezoelectric accelerometer (TPA) with one inertia element and oblique-angle measuring basis are presented. The results obtained under vibration activated in three mutually perpendicular directions along the measuring axes show that the transducer measuring system is properly designed to provide for effective broadband orthogonalization of the measuring basis. The results obtained can be used to develop orthogonalizing transducers that eliminate transverse sensitivity in a wide frequency range, as well as to improve the design of sensors and their metrological characteristics.

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Nonlinear Dynamics of a Vibrating Machine with an Electrodynamic Actuator

Cited by 2 publications

References 1 publication

The process of the mill feed flow along a curved acting face of a vibration mill screen

The process of the mill feed flow along a curved acting face of a vibration mill screen

Study of the phase characteristics of vibration sensors and conditions of orthogonalization of their measuring basis for the systems of vibration control and vibration testing of materials

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