TY JOUR TI Improving the methodological basis of modeling of forest machines with energy-saving hydraulic drive KW the manipulator KW dynamic load KW damper KW accumulator KW energy recovery JO Actual directions of scientific researches of the XXI century: theory and practice AU Popikov, V.P. AU Klubnichkin, V.E. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov