Discrete element parameter calibration and testing of interaction between yellow lateritic red soil and trenching components
To solve the problem of missing interaction parameters between sugarcane planting machinery and planting soil,yellow lateritic red soil,one of the main sugarcane planting soil species in southern Yunnan,was selected for discrete element parameter calibration.Firstly,take the soil angle of repose as the response value,use the Box-Be-hnken optimization method of Design-Expert software to obtain the regression model of the soil angle of repose.With the measured angle of repose as the optimization goal,the relative errors between the simulated value and the meas-ured value for different layers of soil are 1.76％and 2.54％respectively.Secondly,the range of contact parameters is measured through three physical tests,and the relative error of optimization for different layers is 1.61％and 2.29％respectively with the static sliding friction angle as the response value.The results indicate that the error be-tween the simulated and measured values is relatively small,which can provide reference for the simulation parame-ters of the interaction between yellow lateritic red soil and soil contact components(65 Mn steel).
yellow lateritic red soildiscrete element simulationparameter calibrationclay
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