TY JOUR TI DEVELOPMENT OF PROPOSALS FOR USING VARIATION VARIANTS (SOPEL) FOR BUILDING 3D PRINTER KW additive technologies KW construction production KW screw supercharger KW molding head KW nozzle KW rheo-logical model KW effective viscosity JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Gerasimov, M.D. AU Gorshkov, P.S. AU Brazhnik, Y.V. AU Grudina, V.A. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov