TY JOUR TI FORCED TORSIONAL VIBRATIONS IN THE PRESENCE OF RESISTANCE FORCES KW Torsional vibrations KW mechanical system KW the equivalent stiffness KW dissipative forces JO Modeling of systems and processes AU Belyaev, A.. AU Trishina, T.. PY 2015 IS 8 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov