TY JOUR TI Mathematical model and methodology of express assessment crisis-deformed state of the machine frame for the care of forest crops KW brush cutter KW care of forest crops KW forestry machines KW methodology KW mathematical modeling KW finite element method (FEM) KW computer-aided design systems (CAD). JO Forestry Engineering Journal AU Bukhtoyarov, L.D. AU Gnusov, M.A. AU Lysych, M.N. PY 2025 IS 15 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov