Dynamic Analysis on Vertical Vibratory Conveyor

Zhao, Yue; Feng, Huijuan; Zhao, Zhi Lin

doi:10.4028/www.scientific.net/amr.694-697.3

Cited by 6 publications

(3 citation statements)

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“…Numerical simulations showed that the important dynamic characteristics of the system and presented a periodic behavior for these conditions [9][10][11]. The mathematical study and nonlinear dynamic analysis of the vertical conveyor oscillations under different excitations were introduced [12][13][14][15]. The vertical conveyor analysis was investigated using unit control of positive position feedback and negative velocity feedback controls [16,17].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Vibrations Analysis and Dynamic Responses of a Vertical Conveyor System Controlled by a Proportional Derivative Controller

2020

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In this paper, we introduce a nonlinear vibrations analysis and dynamic responses of a vertical conveyor system under multi excitation forces. By adding the nonlinear proportional derivative controller (NPD) to the vibrating motion of the vertical vibration conveyor, the energy was transferred between uncontrolled and controlled system. We calculate the approximate solutions of the vibrating system utilizing the method of multiple scales. In addition, we investigate the stability at worst resonance cases using phase plane technique, equations of frequency response, and averaging method. The vertical vibration conveyor behavior was studied numerically at the values of its different parameters. The results exhibit the efficiency of NPD control unit to avoid the oscillations of the vertical conveyor system. Numerical simulations have been carried out using MAPLE and MATLAB software's to ensure the fidelity of our results. Comparisons are made between analytical and numerical results. Also, findings of the present work are discussed in details and compared with published works. INDEX TERMS Vertical shaking conveyor, Vibrations, Nonlinear proportional derivative control (NPD).

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Section: Introductionmentioning

confidence: 99%

Nonlinear Vibrations Analysis and Dynamic Responses of a Vertical Conveyor System Controlled by a Proportional Derivative Controller

2020

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“…In most cases, granular materials must be automatically and continuously transported from the ground to a certain height. Considering the constraints of lunar engineering, a vibratory conveyor with a simple configuration that consumes relatively little energy is more suitable than a belt conveyor [4]. Furthermore, a vibratory conveyor can transport high-temperature or corrosive materials because its trough can be readily made from a The associate editor coordinating the review of this manuscript and approving it for publication was Chaoyong Li.…”

Section: Introductionmentioning

confidence: 99%

A Vibratory Conveying Method for Planetary Regolith: Preliminary Experiment and Numerical Simulation

Chen

Zhang

et al. 2019

IEEE Access

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Planetary regolith conveying is an important process during planetary in situ resource utilization. After introducing finlike asperities on a longitudinally vibrated trough surface, we experimentally investigated the effects of vibration amplitude, frequency, and trough inclination angle on the particle flow state and directional conveying capacity. A numerical simulation based on the discrete element method (DEM) was then employed to study the detailed particle motion. Three flow states gradually appeared as the vibration strength increased: the particles remain stationary, flow down to the bottom of the trough, or directionally convey toward the discharge hole. The results indicated that the directional conveying capacity increased and decreased monotonically with increases in the vibration amplitude and trough inclination angle, respectively. The conveying capacity changed circuitously as the frequency increased and vanished when the frequency approached the resonant frequency of the trough. Additionally, according to the DEM simulation, breaking the force chains in the particle pile is necessary for conveying. The asymmetric force induced by the finlike asperities and its cumulative effect over time determines the particle flow state and conveying capacity. The particle flow velocity decreased as the granular layer height increased. This paper provides inspiration and guidance for designing a new type of conveyor for planetary regolith.

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“…In most cases, the granular materials must be transported from the ground to a certain height automatically and continuously. Considering the constraints of lunar engineering, a vibratory conveyor with a simple configuration that consumes relatively little energy is more suitable than a belt conveyor [4]. Furthermore, a vibratory conveyor can transport high-temperature or corrosive materials because its trough can be readily made from a refractory and corrosion-resistant material.…”

Section: Introductionmentioning

confidence: 99%

Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method

Chen

Jiang

Liu

2018

Shock and Vibration

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Particles can move directionally in a trough with finlike asperities under longitudinal vibrations. Here, we present an analysis of the particle conveyance mechanism and the influence of the asperity shape on the particle conveyance capacity by employing a numerical simulation based on the discrete element method (DEM). A dynamic-static matching method is proposed to characterize the three microcontact parameters in the simulation: the restitution coefficient, static friction coefficient, and rolling friction coefficient. The simulation shows that the asymmetric force induced by the finlike asperities and its cumulative effect over time lead to the particle directional conveyance. The conveyance velocity increases with increasing vibration time and is related to the median coordination number. The asperity height and slope inclination angles determine the trough shape and distance between two asperities directly. An undersized or oversized distance reduces the steady conveyance velocity. We find the optimal distance to be between one and two particle diameters.

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Dynamic Analysis on Vertical Vibratory Conveyor

Cited by 6 publications

References 0 publications

Nonlinear Vibrations Analysis and Dynamic Responses of a Vertical Conveyor System Controlled by a Proportional Derivative Controller

Nonlinear Vibrations Analysis and Dynamic Responses of a Vertical Conveyor System Controlled by a Proportional Derivative Controller

A Vibratory Conveying Method for Planetary Regolith: Preliminary Experiment and Numerical Simulation

Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method

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