TY JOUR TI PERFORMANCE EVALUATION OF CENTER COUPLER DRAFT GEARS OF RAILWAY ROLLING STOCK KW draft gear KW devices KW car KW impact KW characteristic JO Transport engineering AU Kozlov, M.P. AU Kornienko, N.A. AU Bespal'ko, S.V. AU Karev, D.Y. PY 2022 IS 2022 PB Bryansk State Technical University