Indentation rolling resistance in pipe conveyor belts: a review

In order to obtain accurate results from computer simulation of the dynamic behavior of conveyor belts an accuracy description of the resistance forces, especially the indentation rolling resistance, is necessary. Since the indentation rolling resistance can account for the major part of the total rolling resistance, it is important to calculate it using a proper method. A new full two-dimensional semi-analytical method based on Maxwell model is developed to rigorously and efficiently simulate and solve the indentation rolling resistance of conveyor belts. In this method, the solution is expanded into a set of Fourier series, a so-called Maxwell model characterizing the viscoelastic properties for the belt cover material is used to relate Fourier coefficients, and a special boundary element is developed to handle the rolling contact boundary condition. A verification example is given to validate the methodology.

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Conveyor belts. Indentation rolling resistance related to belt width. Requirements, testing

10.3403/30335115u ◽

2016 ◽

Keyword(s):

Rolling Resistance ◽

Conveyor Belts ◽

Indentation Rolling Resistance ◽

Belt Width

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Investigation on indentation rolling resistance of belt conveyor based on Hertz contact theory compared with one-dimensional Winkler foundation

Advances in Mechanical Engineering ◽

10.1177/1687814018783938 ◽

2018 ◽

Vol 10 (7) ◽

pp. 168781401878393 ◽

Cited By ~ 3

Author(s):

Lu Yan

Keyword(s):

Rolling Resistance ◽

Contact Theory ◽

Theoretical Formula ◽

Winkler Foundation ◽

Hertz Contact ◽

Belt Conveyor ◽

One Dimensional ◽

Hertz Contact Theory ◽

Viscoelastic Theory ◽

Indentation Rolling Resistance

Based on Hertz contact theory and one-dimensional Winkler foundation combination with viscoelastic theory, the author derived theoretical formulas of indentation rolling resistance, respectively. Using the laboratorial apparatus of indentation rolling resistance, the author mainly concentrates on the error analysis about two kinds of theoretical formula which bear on indentation rolling resistance compared with experimental result. The reason why author employs Hertz contact theory to discuss indentation rolling resistance is that indentation rolling resistance is a sort of contact resistance. As a result, Hertz contact theory is generally applicable to study it. On the other hand, because conveyor belt has viscoelastic property, it is appropriate to use viscoelastic theory by the aid of three-parameter Maxwell viscoelastic model combination with one-dimensional Winkler foundation. Ultimately, this article infers that theoretical formula based on the Hertz contact is brief and clear compared with one-dimensional Winkler foundation in principle. However, it is noticeable that when the belt is at high speed, the reliability of formula based on Hertz theory has decreased obviously. This conclusion can give a beneficial reference for the energy saving of belt conveyor.

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Experimental tests of the impact of selected parameters on the indentation rolling resistances

E3S Web of Conferences ◽

10.1051/e3sconf/20182900002 ◽

2018 ◽

Vol 29 ◽

pp. 00002 ◽

Cited By ~ 1

Author(s):

Dariusz Woźniak ◽

Lech Gładysiewicz ◽

Martyna Konieczna

Keyword(s):

Main Part ◽

Rolling Resistance ◽

Experimental Tests ◽

Conveyor Belt ◽

Significant Component ◽

Different Types ◽

Indentation Rolling Resistance ◽

Belt Conveyors ◽

The Impact

Belt conveyors are main part of transporting systems in mines and in many other branches of industry. During conveyor belt works different types of resistances are generated. Indentation rolling resistance is the most significant component of the resistances from the perspective of energy losses and it cause the biggest costs as well. According to latest state of analyses and measurements it is well known that theoretical rolling resistance were underestimated in comparison with the measured in-situ one. In this paper new method for determination indentation rolling resistance is presented. The authors compared theoretically and experimentally established damping factors. The relation between these two values enabled to obtain more precise equation for damping function. This function is one of the most important component in calculation of the rolling resistance. In new theoretical model value of rolling resistance is nearly twice higher than this used so far.

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