Failure and sensitivity analysis of a reconfigurable vibrating screen using finite element analysis

Ramatsetse, Boitumelo; Mpofu, Khumbulani; Makinde, Olasumbo

doi:10.1016/j.csefa.2017.04.001

Cited by 23 publications

(10 citation statements)

References 11 publications

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“…Vibrating screens are critical machines prone to successive failures that can result in huge economic losses [5] and must be constantly improved in order to meet the requirements of the mining industry [6]. Proper operation of this machine has important benefits for the whole mineral process [7], and for this reason, many studies have been conducted to investigate the behavior and operational parameters for successful operation.…”

Section: Introductionmentioning

confidence: 99%

“…e literature presents several models and studies covering different aspects of vibrating screens. Models of screens using a probabilistic approach [12,13], stratification and passage in the screening process [14], particle movement [15][16][17][18][19], screen blocking [20], finite elements [5,[21][22][23][24], crushing plants [7,25], and phenomenological models [26] can be found in the literature. Dynamic models of vibrating screens can simulate motion of the vibrating screen structure and show good agreement with experimental measurements [27] and finite element method (FEM) results [22].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Modeling of a Vibrating Screen Considering the Ore Inertia and Force of the Ore over the Screen Calculated with Discrete Element Method

Moncada

Rodríguez

2018

Shock and Vibration

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Vibrating screens are critical machines used for size classification in mineral processing. Their proper operation, including accurate vibration movement and slope angle, can provide the benefits of energy savings and cost reductions in the screening process and the whole mining process. Dynamic models of the vibrating screen movement available in the literature do not simulate ore motion or its interaction with screen decks. The discrete element method (DEM) allows for the calculation of the dynamic of the ore. In this paper, two 2D three-degrees-of-freedom dynamic models for a vibrating screen are tested, using linear and nonlinear approaches for angular displacement. These models consider the inertia of the ore and the ore force calculated with DEM. A double-deck linear motion vibrating screen is simulated using the DEM software LIGGGTHS. DEM is used to obtain the ore parameters in the steady state and the force on the screen decks. Two cases are compared: Case 1 considers the ore as moving together with the vibrating screen, and Case 2 considers the ore force on the screen deck as calculated by DEM. Simulations are carried out with data for an industrial vibrating screen used in copper mining. The force over the screen is significantly different between the cases. Case 1 produces a force that is unrealistic because the ore cannot produce a high-amplitude adhesion force over the screen decks. In Case 2, no adhesion force acts between the ore and deck. It is concluded that the linear dynamic model used in Case 2 is adequate to evaluate the influence of the ore on the movement of the vibrating screen. The linear dynamic model considering the force as in Case 1 can be used to simulate a vibrating screen, as long as a correct calibration parameter is included to obtain an accurate motion amplitude.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling of a Vibrating Screen Considering the Ore Inertia and Force of the Ore over the Screen Calculated with Discrete Element Method

Moncada

Rodríguez

2018

Shock and Vibration

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“…DEM analysis allows to identify the physical principles that govern a system and develop a numerical model to predict the motion and interactions of particles and domains under different operating conditions [35] [36] [37] [38] [39] [40].…”

Section: B Dem Data-generating Processmentioning

confidence: 99%

Development of a Cyber-Physical System to Monitor Early Failures Detection in Vibrating Screens

Aqueveque¹,

Radrigan

Morales

et al. 2021

IEEE Access

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“…The main distinctions between the advantages and disadvantages of the vibrating screens are the rationality of the structural design of the body, the reliability of the exciter, the advanced processing technology, and the long-term effectiveness of the body material [11,12]. Vibrating screens are critical machines prone to successive failures that can result in huge economic losses [13] and must be constantly improved in order to meet the requirements of the mining industry [14]. At present, the University of Concepción, Edmundo Larenas has used two 2D three-degreesof-freedom dynamic models for a vibrating screen are tested, using linear and nonlinear approaches for angular displacement.…”

Section: Introductionmentioning

confidence: 99%

Controlled experimental research and model design of double-layer high-frequency vibrating screen machine

Pang¹,

Liu²,

Cai³

et al. 2021

J. vibroeng.

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The double-layer high-frequency vibrating screen machine is widely used in the tobacco industry, and its controllability of vibration has a great influence on the screening quality of cut tobacco. In this paper, we obtain the factors affecting the motion characteristics of the vibrating screen by theoretical derivation and experimental measurement of the motion parameters of the double-layer high-frequency vibrating screen machine, and determine the relationship between various factors and the amplitude of the vibrating screen. We also studied the properties of material motion. Through the overall research, we found that in the controllable process of realizing the high-frequency double-layer vibrating machine, we need to pay attention to the quality of the rotor of the motor, the angular velocity, and the radius of gyration, and also need to consider the number of spring piece and the rigidity of the spring piece. Also, the quality of the material will affect the movement of the screen.

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Failure and sensitivity analysis of a reconfigurable vibrating screen using finite element analysis

Cited by 23 publications

References 11 publications

Dynamic Modeling of a Vibrating Screen Considering the Ore Inertia and Force of the Ore over the Screen Calculated with Discrete Element Method

Dynamic Modeling of a Vibrating Screen Considering the Ore Inertia and Force of the Ore over the Screen Calculated with Discrete Element Method

Development of a Cyber-Physical System to Monitor Early Failures Detection in Vibrating Screens

Controlled experimental research and model design of double-layer high-frequency vibrating screen machine

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