Research on spatial Lissajous trajectory vibrating screen

Lyu, Zhipeng; Zhou, Sizhu

doi:10.1177/1687814019872851

Cited by 8 publications

(4 citation statements)

References 23 publications

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“…Substituting Equation (22) into Equations ( 23) and (24), respectively, and simplifying, we can obtain…”

Section: Steady-state Responses Of the System Based On Ihbmmentioning

confidence: 99%

“…They found that the influence of frequency on delamination and penetration rate was greater than that of swing angle. 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.…”

Section: Introductionmentioning

confidence: 99%

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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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“…Substituting Equation (22) into Equations ( 23) and (24), respectively, and simplifying, we can obtain…”

Section: Steady-state Responses Of the System Based On Ihbmmentioning

confidence: 99%

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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“…Using motors with excessive power reserves can adversely affect the power grid (significant reactive power) and increase the vibrating mass. In most cases, research on screens is limited to steady-state studies [15,18] and studies focused solely on the screening process using DEM simulations [19][20][21][22][23][24]. There are also attempts to develop vibration models that would consider the screened material's influence on the vibration parameters.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Vibrating Screen Startup Time on Vibration Amplitude and Energy Consumption in Transient State

Feliks,

Tomach

2023

Energies

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The article presents the results of research on the trajectory and amplitude values during the startup of a vibrating screen, depending on the set startup time. The research was conducted using a suspended vibrating screen with a segmental vibration trajectory, where vibration excitation was achieved through two vibratory motors directly attached to the screen frame. The vibratory motors were powered with three-phase voltage and connected to the grid through frequency converters, allowing for current control in steady-state and startup conditions. The analysis focused on the vibration trajectory and the resulting amplitude values for nine selected startup times (ranging from 0 s to 8 s). Two measurement methods were employed: using piezoelectric acceleration sensors and optical recording. Additionally, the momentary power consumption by the screen drive was recorded, and the maximum current flowing in the power supply circuit was determined. These studies enabled the determination of the most favourable startup parameters that reduce the power demand of the drive without significantly affecting the kinematic parameters of the screen during its startup. The results of experimental research presented in the article regarding the startup time of the screening machine and its influence on vibration parameters have shown that the startup time significantly impacts the amplitude values that occur during startup. In the analysed case, the most favourable startup time was 3 s. Power consumption studies during startup revealed that startup time has a notable influence on momentary power consumption. The conducted research demonstrated that for startup times below 0.2 s, the maximum momentary power was the highest (reaching 5 kW, with a current consumption of 4.5 times the rated current). Regarding energy efficiency, the most favourable startup times exceed 2.0 s. Extending these startup times can significantly reduce the power demand of the drive, even up to threefold, thereby enabling the selection of motors with much lower power ratings.

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“…Many researchers deal with the problem of the steady-state operation of screens and numerical simulation DEM to simulate the material's behaviour on the screening board [21][22][23][24][25]. Some researchers have also attempted to develop a vibration measurement model that considers material disturbances [26,27].…”

Section: Introductionmentioning

confidence: 99%

Research on the New Drive of a Laboratory Screen with Rectilinear Vibrations in Transient States

et al. 2021

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The paper presents the results of research on the vibrating motion of a laboratory screen with a rectilinear (segmental) trajectory of vibrations during its start-up and braking. The investigations were carried out on a modernized stand equipped with a system of two vibrating motors applied in newer solutions of industrial screens, which are mounted directly on the riddle. The tests were carried out for three different frequencies using three-axis acceleration sensors. The analysed parameter was the increase in the amplitude of vibrations in transient states compared to the amplitude during the stable operation of the device. The maximum multiplication of the vibration amplitude of the classic drive system during start-up was 9.7 (mm/mm) in the vertical direction and 5.7 (mm/mm) for the new system. During braking, the maximum multiplication of the vibration amplitude of the classic drive system was 6.9 (mm/mm) vertically, while for the drive system with vibration motors, it was 11.4 (mm/mm). The absence of flexible couplings in the drive system reduces the damping of vibrations and increases the value of amplitude during the start-up and free braking of the machine. This does not have a major influence on the correct operation of the machine in a steady state. However, the use of the new drive system resulted in a significant reduction in power demand and shortened the start-up time, which has a positive effect on the operating costs of the machine.

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Research on spatial Lissajous trajectory vibrating screen

Cited by 8 publications

References 23 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

The Impact of Vibrating Screen Startup Time on Vibration Amplitude and Energy Consumption in Transient State

Research on the New Drive of a Laboratory Screen with Rectilinear Vibrations in Transient States

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