Response Analysis of a Scraper Conveyor under Chain Faults Based on MBD-DEM-FEM

To tackle the difficulty in obtaining response data of chain and bulk coal under faults, this paper uses a new method for fault simulation scraper chains based on coupling multi-body dynamics (MBD), discrete element (DEM), finite (FEM). With force stacking angle as values, contact parameters were revised using rotary transport test. The simplified DEM-MBD model was verified from resistance point-by-point method. static structure by tensile experiment. results show that when is stuck or broken, dynamic properties fluctuate sharply, wear medium plate increases. Based DEM-FEM unidirectional coupling, stress, strain life acquired, experimentally. Regarding fracture, Plackett-Burman test used to determine crack depth, initial angle, load significantly affect stress intensity factor (SIF). quadratic between significant factors SIF constructed surface method, which provides reference conveyor, mechanism, optimization design chain.