This research demonstrates the impact of discrete element method parameters on angle of repose in ruminant protein feed, indicating improved processing efficiency.
Key Points
This research aimed to calibrate contact parameters for ruminant protein supplement feed pellets using the discrete element method.
Established a DEM-based particle model to study material properties.
Employed Plackett–Burman design to identify key influencing factors.
Conducted Steepest Ascent test and Box–Behnken design for parameter optimization.
Developed a regression model for calibration of parameters.
Optimal coefficients for static friction, rolling friction, and restitution were found to be 0.45, 0.55, and 0.05 respectively.
Validation experiments showed 0.92% average deviation between calibrated and measured angles of repose.
Results highlight significant effects of friction coefficients on the angle of repose.