Influence of wear of a roller drive chain on transmission fitness

Metil’kov, S. A.; Yunin, Vladimir

doi:10.3103/s1068798x08080029

Cited by 6 publications

(2 citation statements)

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“…The fretting wear of the scraper chain is difficult to express. At present, the research on fretting wear mainly focuses on the experimental research of constant normal force and constant unit sliding distance (Metil'kov and Yunin, 2008;Ma et al, 2018;Akhtar and Guo, 2008;Guo et al, 2017). In actual production activities, the normal force and the unit sliding distance are time-dependent.…”

Section: Numerical Model Of Fretting Wear Between Chain Elementsmentioning

confidence: 99%

Time-dependent reliability and optimal design of scraper chains based on fretting wear process

Zhu

Lü

et al. 2021

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Purpose This paper aims to present a dynamic reliability model of scraper chains based on the fretting wear process and propose a reasonable structural optimization method. Design/methodology/approach First, the dynamic tension of the scraper chain is modeled by considering the polygon effect of the scraper conveyor. Then, the numerical wear model of the scraper chain is established based on the tangential and radial fretting wear modes. The scraper chain wear process is introduced based on the diameter wear rate. Furthermore, the time-dependent reliability of scraper chains based on the fretting wear process is addressed by the third-moment saddlepoint approximation (TMSA) method. Finally, the scraper chain is optimized based on the reliability optimization design theory. Findings There is a correlation between the wear and the dynamic tension of the scraper conveyor. The unit sliding distance of fretting wear is affected by the dynamic tension of the scraper conveyor. The reliability estimation of the scraper chain with incomplete probability information is achieved by using the TMSA for the method needs only the first three statistical moments of the state variable. From the perspective of the chain drive system, the reliability-based optimal design of the scraper chain can effectively extend its service life and reduce its linear density. Originality/value The innovation of the work is that the physical model of the scraper chain wear is established based on the dynamic analysis of the scraper conveyor. And based on the physical model of wear, the time-dependent reliability and optimal design of scraper chains are carried out.

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Section: Numerical Model Of Fretting Wear Between Chain Elementsmentioning

confidence: 99%

Time-dependent reliability and optimal design of scraper chains based on fretting wear process

Zhu

Lü

et al. 2021

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“…Previous studies of roller chains have predominantly investigated the mechanics of a chain within a chain drive system, its power transmission efficiency, longevity, durability and many other topics of practical significance [1][2][3][4]. Recently, successful attempts at modelling and simulating roller chains using multibody dynamics 2 have been developed [5][6][7], although still limited to chain drive motion.…”

Section: Introductionmentioning

confidence: 99%

A walking roller chain

2018

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In this article, we study the motion of a vertically fixed rapidly spinning roller chain that, after being released, “walks” a certain distance along the floor. We construct a two-dimensional model of the roller chain. By numerically integrating its equations of motion, we make predictions on the distances travelled by the roller chain, the code of the simulation being available online in the supplements. Finally, we compare the predictions with experiments, discuss the results, and suggest topics for further research.

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