TY JOUR TI Methods of development of mathematical models for finite element calculation of strain state and improving the design of the frame of wheeled forestry machines KW frame KW wheeled forest machine KW loads. JO Actual directions of scientific researches of the XXI century: theory and practice AU Shnyakov, A.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov