Determination of the Coefficient of Particle Friction and the Coefficient of Rolling Friction Using 2d-Dem Focusing on the Density Dependence of the Angle of Repose

Key Points

• The research aims to examine the density dependence of the angle of repose and determine friction coefficients using 2D-DEM.
• Conducted a parametric study using 2D discrete element method (2D-DEM).
• Focused on angle of repose tests on aluminum rod stack.
• Developed a parameter estimation method based on varying densities.
• The angle of repose estimated from the method aligned well with experimental results.
• Density dependence of the angle of repose was confirmed through empirical testing.