TY JOUR TI Modeling the interaction of soil with a combined tool - a knife roller and a pair of disc plows KW tillage implements KW knife rollers KW disc working bodies KW combined machines KW felling machines KW traction resistance of working bodies KW discrete element method (DEM) JO Forestry Engineering Journal AU Bukhtoyarov, L.D. AU Lysych, M.N. AU Malyukov, S.V. PY 2025 IS 15 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov