Optimal oscillation parameters of vibrating screens

Safranyik, Ferenc; Csizmadia, Béla; Hegedűs, Attila; Keppler, István

doi:10.1007/s12206-019-0403-1

Cited by 22 publications

(8 citation statements)

References 13 publications

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“…Lyu and Zhou 22 investigated the particle's movement rule of the vibrating screen with Lissajous spatial trajectory by DEM, which can effectively prevent the blockage of the screen hole. Safranyik et al 23 used the DEM to carry out the parameter optimization of the "Kertesz" screening machine produced in Hungary. Liu and Zhao [24][25][26][27] have conducted a series of numerical investigations about vibration screens, draw some referential conclusions.…”

Section: Introductionmentioning

confidence: 99%

Time‐varying piecewise nonlinear dynamic model of the vibrating machinery with elliptical trajectory consider the interactions between its frame and particles

Zhang

Zhong

2022

Numerical Meth Engineering

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Vibrating machinery with an elliptical trajectory widely exists. The bulk particles show a regular sliding motion and throwing motion under the periodic vibration of the frame. It is essential for the theoretical design and engineering application of such machinery to study the particle's motion theory based on considering the interactions between particles and frame in detail. In the first, a time-varying piecewise nonlinear dynamic model of the system is established based on the force analysis of the particles in the state of sliding and throwing motion. The dimensionless equations of systems with nonlinear terms are deduced. After that, the feasibility of using a single particle to study the particle flow's movement is verified by the discrete element method. Then, the system's approximate steady-state analytical solution is obtained by the incremental harmonic balance method. Its numerical solutions are solved by the Newmark-β method, and the solutions obtained by the three methods are verified mutually. In addition, the Sommerfeld effect in vibration system and the system's related parameters are analyzed. Finally, an experimental platform of particles' movement is built. The feasibility of the theoretical analysis in this article was verified by particle's movement experiments.

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Section: Introductionmentioning

confidence: 99%

Time‐varying piecewise nonlinear dynamic model of the vibrating machinery with elliptical trajectory consider the interactions between its frame and particles

Zhang

Zhong

2022

Numerical Meth Engineering

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“…Based on the above studies, Wang et al studied the motion behavior of single particle on the surface of vibratory screen [15]. Safranyik et al discussed the motion forms of a single spherical grain particle in the vibrating screen [16]. Dong et al studied the movement of particle and sieving behavior on a vibrating screen by means of discrete element method (DEM) [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Study on stability of self-synchronous far-resonant vibrating system of two eccentric rotors considering material impact

et al. 2021

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The self-synchronizing far-resonant vibrating system of two eccentric rotors is widely used in petroleum, mining and food industries, and its motion stability is affected by material impact. However, the synchronous characteristics and stability of this kind of the system are studied rarely. Based on the background, a simplified mechanical model of the selfsynchronous vibrating system driven by two eccentric rotors considering material impact is proposed. Firstly, the differential equations of motion about the system in non-collision and collision phase are established by using Lagrange equation and the theorem of momentum. Then, the section of Poincare maps and linearization matrix at the fixed point are solved. Finally, the dynamic behavior of material and system is analyzed, and then the change characteristics of the phase difference of the two eccentric rotors are revealed by numerical simulation. It can be concluded that the motion forms of the system and the rules of abrupt change about the phase difference evolve from periodic variation into chaotic state with the mass ratio of material to vibrating body increasing.

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“…Their research shows that the parts' motion places a significant role in effecting the dynamics of vibrating feeder, and the alterations of the system's dynamics will also effect parts' motion. In the literature, [12][13][14] the motion of single particle on vibrating screen's surface is investigated. Further, Vladislav's study shows that the nonlinear second-order system will not vibrate in the near resonant regime when the mass of material increase, and the motion of the system is stochastic.…”

Section: Introductionmentioning

confidence: 99%

Stability and synchronous characteristics of a two exciters vibration system considering material motion

Hou

Xiong

Fang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part K:

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Nowadays, two exciters vibration system played an indispensable role in a majority of machinery and devices, such as vibratory feeder, vibrating screen, vibration conveyer, vibrating crusher, and so on. The stability of the system and the synchronous characteristics of two exciters are affected by material motion. However, those effects of material on two exciters vibration system were studied very little. Based on the special background, a mechanical model that two exciters vibration system considering material motion is proposed. Firstly, the system's dynamic equations are solved by using Lagrange principle and Newton's second law. Then, the motion stability of the system when material with different mass move on the vibrating body is analyzed by [Formula: see text] mapping and numerical simulation methods, and the motion forms of the material are also studied. Meanwhile, the frequency responses of the vibrating body are analyzed. Finally, the influence of material on the phase difference of the two exciters is revealed. It can be concluded that with the mass ratio of the material to the vibrating body increasing, the system's motion evolves from stable periodic motion to chaotic state, the synchronization ability of two exciters decline, and the unpredictability of abrupt change about the phase difference increases. Further, the uncertainties of both the abrupt change of phase difference and the collision location affect each other and eventually lead to the instability of the system.

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Optimal oscillation parameters of vibrating screens

Cited by 22 publications

References 13 publications

Time‐varying piecewise nonlinear dynamic model of the vibrating machinery with elliptical trajectory consider the interactions between its frame and particles

Time‐varying piecewise nonlinear dynamic model of the vibrating machinery with elliptical trajectory consider the interactions between its frame and particles

Study on stability of self-synchronous far-resonant vibrating system of two eccentric rotors considering material impact

Stability and synchronous characteristics of a two exciters vibration system considering material motion

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