TY JOUR TI Differentiation of spectra of operating loads during resource tests of draft devices of innovative cars KW innovative rolling stock KW car testing KW load spectrum KW draft gear KW car collision KW car life JO Bulletin of scientific research results AU Komaydanov, A.A. AU Zverev, M.V. AU Smirnov, A.N. PY 2024 IS 2024 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"