Study on Prediction Method of Fatigue Life for Vertical Ring of Chains Applied to Scraper Conveyor
Abstract：According to the high cost and long period of the fatigue test for the vertical ring of the scraper chains in the scraper conveyor, the multimedia dynamics software was applied to establish a rigid-flexible coupling dynamics model of the chain riving system. A similar calculation was firstly conducted on the typical performances, the stress cloud diagram of each simulation time for the vertical ring was ob- tained and the dangerous point was determined. Then the load stress time history of the dangerous point was picked up. According to the mission cross section of the scraper conveyor, a load process could be conducted and the load spectrum of the service life calculation could be obtained. Finally according to the linear fatigue failure accumulation law, the fatigue service life of the vertical ring dangerous point could be calculated and the circulated numbers under the mission cross section of the vertical ring were obtained. The virtual prototype technology could be applied to the prediction of the fatigue service life of the chain ring, thus could reduce the fatigue test cost and could provide the technical base for the fatigue test of the whole machine in the near future.
Keywords：scraper conveyorchain driving systemfatigue lifevirtual prototype technologyrigid-flexible coupling dynamics model
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 62-65 )