%0 Journal Article %T Mathematical model and methodology of express assessment crisis-deformed state of the machine frame for the care of forest crops %A Bukhtoyarov, L.D. %A Gnusov, M.A. %A Lysych, M.N. %K brush cutter, care of forest crops, forestry machines, methodology, mathematical modeling, finite element method (FEM), computer-aided design systems (CAD). %J Forestry Engineering Journal %D 2025 %N 15 %P 15 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov