The influence of viscoelastic property measurements on the predicted rolling resistance of belt conveyors

Since indentation rolling resistance accounts for the major part of total resistance of belt conveyor, it is important to compute it using a proper method during the design and application study of the belt conveyor. First, an approximate formula for computing the indentation rolling resistance is offered. In this formula, a one-dimensional Winkler foundation and a three-parameter viscoelastic Maxwell solid model of the belt backing material are used to determine the resistance to motion of a conveyor belt over idlers. With the help of this formula, the authors analyze the effect of common factors on the rolling resistance. Finally, experiments are carried out under certain condition compared with theoretical analysis. A reasonable correlation exists between the experimental results and the theoretical formulae.

show abstract

“…Furthermore, the storage and loss moduli of equation (2) are related to the mechanical element values by the Prony series…”

Section: Rubber Properties and Materials Characterizationmentioning

confidence: 99%

Investigation into the effect of common factors on rolling resistance of belt conveyor

Lü

Lin

2015

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…However, they assumed that the cover layer is a viscoelastic half-space. O'Shea et al's 11 research can be used to predict the rolling resistance of indentation. Lauhoff 12 focused on the effect of belt speed on energy conservation.…”

Section: Introductionmentioning

confidence: 99%

Indentation rolling resistance based on a three-parameter Kelvin solid model

Zhao

Meng

Zhou

2019

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The indentation rolling resistance of a belt conveyor with stable operation accounts for more than 60% of the total resistance. Thus, the effective reduction of indentation rolling resistance and its energy consumption have attracted considerable attention of engineers. Indentation rolling resistance is due to the viscoelasticity of conveyor belt. A threeparameter Kelvin solid model is used to characterize the viscoelasticity of materials. The parameters of the Kelvin solid model include two elastic moduli E 0 and E 1 and one viscous coefficient h 1 , and their fitting functions are obtained by completing a dynamic tensile test. A mathematical model of indentation rolling resistance is derived, on the basis of theoretical analysis, which is directly expressed by belt speed, idler radius, and cover layer thickness under the conveyor belt, and is indirectly expressed by normal load and temperature. The influence of five factors on indentation rolling resistance and the influence of combined conditions of any two factors on indentation rolling resistance are separately analyzed on the basis of the mathematical model. The theory in this study is accurate based on the consistency between the theoretical calculation and experimental results. In practical engineering, the operating conditions of belt conveyors are any combination of all factors. Various factors should be considered to reduce indentation rolling resistance.

show abstract

“…Some studies combine theoretical research with experimental results to make the research more convincing. Professor J. I. O'Shea analyzed the errors caused by different viscoelastic testing methods on the IRR results and then introduced a dielectric model to represent the viscoelastic behavior [23,24]. In 2016, P. Munzenberger and C. Wheeler established a test facility for testing IRR [25].…”

Section: Introductionmentioning

confidence: 99%

Research on Indentation Rolling Resistance Based on Viscoelasticity of Cover Rubber under a Conveyor Belt

Zhao

Meng

Zhou

2019

Mathematical Problems in Engineering

View full text Add to dashboard Cite

Minimizing the power consumption of the belt conveyor is the common wish of all enterprises and even countries. Among all the resistances generated by the belt conveyor during the operation, the indentation rolling resistance accounts for the largest proportion and the power consumed is the largest. Therefore, accurately predicting and reducing the rolling resistance of indentation is the focus of current research. Firstly, based on the three-element Maxwell solid model, the dynamic loading experiments of cylindrical rubber made of conveyor belt cover material were carried out at different temperatures. The identification models of elastic moduli E2 and E3 and viscosity coefficient η2 in the three-element Maxwell model were obtained, and then the fitting functions of the three parameters were gotten, which can intuitively reflect the influence of temperature. Secondly, the mathematical model of the indentation rolling resistance was derived. The mathematical model is characterized by the direct parameters such as belt speed v, thickness of backing material h, the idler radius R, and the rubber viscoelastic parameters E2, E3, and η2 and the indirect parameters such as normal force P and temperature T. Afterwards, the effects of belt speed, normal force, temperature, idler radius, and thickness of underlay on the indentation rolling resistance were studied under different working conditions. After that, experimental testing and analysis were fulfilled using test equipment and compared with theoretical analysis results. The results prove that the theoretical results are basically consistent with the experimental results, in line with the actual engineering rules. Finally, the application of the results in practical engineering was analyzed superficially.

show abstract

The influence of viscoelastic property measurements on the predicted rolling resistance of belt conveyors

Cited by 11 publications

References 2 publications

Investigation into the effect of common factors on rolling resistance of belt conveyor

Investigation into the effect of common factors on rolling resistance of belt conveyor

Indentation rolling resistance based on a three-parameter Kelvin solid model

Research on Indentation Rolling Resistance Based on Viscoelasticity of Cover Rubber under a Conveyor Belt

Contact Info

Product

Resources

About