Optimization Mathematical Modeling of the Weight of Metal Structure of Suspended Belt Conveyor Linear Section

Boslovyak, P. V.; Emelyanova, G. A.

doi:10.1016/j.ifacol.2018.11.223

Cited by 11 publications

(3 citation statements)

References 4 publications

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“…They derived the model from basic mechanical principles and built a simulation model based on these equations. They validated their findings by comparing them with experimental results from a real industrial vibratory conveyor [13]. In 2018, P.V.…”

Section: Introductionmentioning

confidence: 64%

Application of EDEM Simulation for Calculating and Optimizing a Closed Coal Fly Ash Screw Conveyor

Tran,

Bui,

Bui

2023

Applied Sciences

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In contemporary bulk material transportation systems, closed screw conveyors have become prevalent. These conveyors, enclosed within troughs or cylindrical bodies, effectively mitigate environmental contamination and material toxicity during transit. Their hermetic design prevents material dispersion by wind, thereby minimizing losses and preserving the integrity of raw materials, particularly those with potential health implications such as urea and cement. Consequently, employing a screw conveyor constitutes a prudent safety measure. Despite the widespread use of screw conveyors, a comprehensive understanding of the behavior of material particles within these systems remains elusive and subject to discrepancies across various methodologies. Presently, a multitude of calculation methods and applications exist, resulting in disparities between theoretical computations and practical implementation. Drawing upon Alan W. Roberts’ meticulously devised calculation methodology, renowned for its precision, the authors have developed a swift computational tool utilizing VBA Excel software 2023. Additionally, EDEM simulation software was employed to model granular material behavior. The ensuing calculations guided the selection of optimized technical dimensions for the screw conveyor, which were then fabricated and subjected to real-world testing at the Vinh Tan thermal power plant. Remarkably, the achieved output capacity demonstrated a mere 7% deviation from calculations performed with the VBA program and a 2% variation from those conducted via EDEM simulation. Furthermore, a comprehensive graph depicting the relationship between screw conveyor speed and capacity has been provided, affording a means to finely tune throughput with exceptional accuracy along the production line. The results obtained provide the basis for the development of a device that meets the required capacity specifications accurately and precisely on the first attempt. This accomplishment satisfies stringent capacity standards without the need for any adjustments or modifications, all while ensuring minimal cost and time efficiency.

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Section: Introductionmentioning

confidence: 64%

Application of EDEM Simulation for Calculating and Optimizing a Closed Coal Fly Ash Screw Conveyor

Tran,

Bui,

Bui

2023

Applied Sciences

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“…In the articles [2,3] a mathematical model of metal suspended structure of a belt conveyor section was developed. The problem of minimization of its weight was stated and solved.…”

Section: Analysis Of Publicationsmentioning

confidence: 99%

Belt conveyor starting mode optimization

Loveikin,

Romasevich,

Kulpin

et al. 2024

OMTC

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The work is aimed at increasing the efficiency of belt conveyors by choosing the drive mechanism movement mode. During the operation of belt conveyors, significant energy and dynamic loads occur in the elements of the drive mechanism and traction body. The available loads significantly affect the energy losses and the reliability of the drive mechanism and the traction body. Energy and dynamic loads during transient processes (starting, braking, changing speed or performance and emergency stop) are especially dangerous. At this moment, high-frequency oscillations of both the traction body and the drive elements arise. With such fluctuations in the traction body (belt) of the conveyor, significant breaking forces arise, which create additional unwanted stresses in it and, as a result, contribute to premature destruction. In addition, the stator and rotor windings of the electric motor are heated, which accelerates their wear and failure. In order to reduce dynamic loads, it is proposed to optimize the movement mode of the drive mechanism. For this purpose, the conveyor is presented in the form of a three-mass dynamic model, based on which a mathematical model was created. From the conducted dynamic analysis of the belt conveyor, it was established that during the start-up process, significant power and energy overloads occur in the elements of the drive and the traction body, which depend on the driving force of the drive. In addition, high-frequency oscillations of the tape are observed. Since the undesirable properties of the belt conveyor largely depend on the magnitude of the driving force of the drive, it should form the basis of the optimization criterion. In addition, the driving force of the drive must be reflected in the optimization criterion during the entire movement process, that is, the optimization criterion must be presented in an integral form. To eliminate the possible compensation of negative and positive values of the driving force on the conveyor, the latter should be represented in the integral criterion in quadratic form. Therefore, the rms value of the driving force of the drive during the start-up time was chosen as the criterion for optimizing the motion mode of the belt conveyor. Optimization of the conveyor movement mode was carried out by minimizing the integral dynamic criterion. As a result of the optimization, the start-up mode of the belt conveyor was determined, which minimizes the effect of dynamic loads. This start-up mode makes it possible to increase the reliability of the conveyor and reduce the energy consumption of the drive.

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“…Ключевые слова: критерий; оптимизация; особые свойства; устойчивость; частота; критическая сила; формы потери устойчивости; формы собственных колебаний; приведенные напряжения. В работах по минимизации веса конструкций [1][2][3][4][5][6][7], в частности стержней при различных ограничениях, начиная с публикаций Лагранжа [8], Т. Клаузена [9], Е.Л. Николаи [10] и других, формулировались особые свойства оптимальных конструкций [11,12].…”

Section: критерий оценки оптимальных решений при формировании кусочноunclassified

Assessment Criterion for Optimum Design Solutions of Piecewise Constant Sections in Rods of Rectangular Cross-Section With Stability or First Eigen-Frequency Limits

Lyakhovich

Akimov

Tukhfatullin

2020

Vestnik Tomskogo gosudarstvennogo arhitekturno-stroitelnogo uni

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Specific properties of optimum systems have been already considered in previous research. Moreover, the criteria were proposed for a correct assessment of proximity of optimum to minimum material consumption. In particular, the criteria are proposed for rods of rectangular crosssection with stability or first eigen-frequency limits. These criteria can be used for problem optimization, when the rod cross-sections continuously change longitudinally. The obtained optimum solutions can be considered as a perfect limited object. This optimum project function allows researcher to assess the real design solution using the proximity limit criterion (for example, material consumption limit). This kind of optimum design can also be used as a guideline for real design in terms of a stage-by-stage process of transition from a perfect to real object. In this case, it is possible to assess changes in the object optimality at each stage as compared to the initial and idealized solutions. In particular, one of the variants of the process includes replacing the rod with continuous longitudinally varying cross-sections by a rod with piecewise constant sections. The section boundaries can be based on a perfect object, and cross-sections can be determined by one of the optimization methods. This paper presents criteria, which ensure the reliable definition of the time of completion of the optimization process.

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Optimization Mathematical Modeling of the Weight of Metal Structure of Suspended Belt Conveyor Linear Section

Cited by 11 publications

References 4 publications

Application of EDEM Simulation for Calculating and Optimizing a Closed Coal Fly Ash Screw Conveyor

Application of EDEM Simulation for Calculating and Optimizing a Closed Coal Fly Ash Screw Conveyor

Belt conveyor starting mode optimization

Assessment Criterion for Optimum Design Solutions of Piecewise Constant Sections in Rods of Rectangular Cross-Section With Stability or First Eigen-Frequency Limits

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