Measurement and calibration of the discrete element parameters of wet bulk coal

•The significant parameters affecting the accumulation of wet bulk coal material are proposed.•The discrete element parameters of wet bulk coal materials are obtained.•The accuracy of calibration parameters is verified by the funnel test and the slide plate test. To simulate the interactions between...

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Bibliographic Details
Published inMeasurement : journal of the International Measurement Confederation Vol. 142; pp. 84 - 95
Main Authors Xia, Rui, Li, Bo, Wang, Xuewen, Li, Tiejun, Yang, Zhaojian
Format Journal Article
LanguageEnglish
Published London Elsevier Ltd 01.08.2019
Elsevier Science Ltd
Subjects
Angle of repose
Calibration
Coal mines
Computer simulation
DEM
Discrete element method
Finite element analysis
Mining machinery
Parameter calibration
Parameter estimation
Parameters
Response surface methodology
Response surface optimization
Simulation
Wet coal
Response surface optimization
Parameter calibration
DEM
Wet coal
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Summary:•The significant parameters affecting the accumulation of wet bulk coal material are proposed.•The discrete element parameters of wet bulk coal materials are obtained.•The accuracy of calibration parameters is verified by the funnel test and the slide plate test. To simulate the interactions between the coal mining machinery and bulk coal accurately, the parameters of wet bulk coal were calibrated using the discrete element method (DEM). The influence of discrete element parameters on particle stacking angle was obtained by Plackett-Burman (PB) test. The calibration and verification of these parameters were carried out based on JKR (Johnson-Kendall-Roberts) model. During the calibration, a series of experiment were carried out; the repose angle obtained by the actual test was taken as the response value. The Box-Behnken design (BBD) based on the principle of response surface method (RSM) was applied in calibration. The numerical difference between those repose angles of actual tests and simulation was less than 4.70%, which improved the reliability of the simulation results. The optimal parameter combination could provide a reference for the reasonable selection of simulation parameters of the wet bulk coal using the EDEM software.
ISSN:0263-2241
1873-412X
DOI:10.1016/j.measurement.2019.04.069