TY JOUR TI Technologies of vibration hardening: mathematical modeling and questions of technical realization KW unilateral constraints KW vibration hardening KW granular medium vibration KW vibration of solid. JO Actual directions of scientific researches of the XXI century: theory and practice AU Sitov, I.. AU Kashuba, V.. AU Pnev, A.. AU Eliseev, S.. AU Eliseev, A.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov