Dynamic analysis of indentation rolling resistance of steel cord rubber conveyor belt
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To study the variation trend of the indentation rolling resistance of a rubber conveyor belt under different environmental temperatures, the sinusoidal compression displacement test was first carried out on the rubber matrix at six temperatures between -20 °C and 40 °C by a high and low temperature universal testing machine. Elastic modulus E1, E2 and loss factor tan θ of the rubber matrix were identified using the Fourier series. Then, the dynamic contact characteristics between the idling roller and conveyor belt were analyzed by the viscoelastic mechanics theory. Hence, the calculation equation of the indentation rolling resistance in the full thickness direction of the conveyor belt was deduced. Finally, a practical calculation and experimental verification of the indentation rolling resistance of the steel cord rubber conveyor belt at different temperatures were conducted. The results showed that the drop of the indentation rolling resistance of the conveyor belt was significant when the temperature was increased in the range of -20–10 °C. In the range of 10–40 °C, the influence of the increase of the ambient temperature on the indentation rolling resistance was relatively weak. Additionally, it is found that the contact force in the vertical direction and the idling roller diameter are important factors that affect the indentation rolling resistance of the conveyor belt. The influence of belt speed on the indentation rolling resistance is weak.
KeywordsIdling roller Rubber matrix Steel cord rubber conveyor belt Indentation rolling resistance Viscoelastic mechanics
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- G. Lodewijks, Determination of rolling resistance of belt conveyors using rubber data: factor fiction?, Bulk Solids Handling, 23 (6) (2003) 384–391.Google Scholar
- G. Lodewijks, Non-linear dynamics of belt conveyor systems, Bulk Solids Handling, 17 (1) (1997) 57–67.Google Scholar
- C. Jonkers, The indentation rolling resistance of belt conveyors: A theoretical approach, Fordern und Heben, 30 (4) (1980) 312–317.Google Scholar
- A. Greune, Energie sparende Auslegung von Gurtforderanlagen (Energy-saving configurations of belt conveyor systems), Niedersachsen: Hanover University (1989).Google Scholar
- J. O’Shea and C. Wheeler, The Influence of viscoelastic property measurements on the predicted rolling resistance of belt conveyors, Journal of Applied Polymer Science, 131 (18) (2014) 9710–9718.Google Scholar
- J. Mao and C. Y. Yang, Theoretical research on indentation resistance to conveyor belt, Chinese Journal of Applied Mechanics, 26 (3) (2009) 461–468.Google Scholar
- Y. T. Wei and T. Q. Yang, The dynamic mechanical properties and energy consumption of the viscoelasticity of rubber, Mechanics China Conference (2005) 406.Google Scholar
- G. David, Low rolling resistance for conveyor belts, The Goodyear Tire & Rubber Company, 10 (17) (2000) 245–261.Google Scholar
- C. Spaans, The calculation of the main resistance of belt conveyors, Bulk Solids Handling, 11 (4) (1991) 325–359.Google Scholar
- C. Wheeler, Indentation rolling resistance of belt conveyors-a finite element solution, Bulk Solids Handling, 6 (26) (2006) 654–670.Google Scholar
- L. Yan and H. Qing, Influencing factors of damping characteristic for metal rubber, Journal of Vibration, Measurement & Diagnosis, 29 (1) (2009) 23–27.Google Scholar