TY JOUR TI Modeling the process of belt feeding of seedlings in a forest planting machine based on the discrete element method KW discrete element method (DEM); timber planting machine; belt feed mechanism; force impact; seedling; mathematical modeling; parametric analysis; biomechanical safety; virtual prototyping JO Forestry Engineering Journal AU Drapalyuk, M.V. AU Shkol'nyh, A.V. PY 2026 IS 16 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov