TY JOUR TI Use of high-strength steel to create high capacity gondola cars KW four-axle gondola car KW universal gondola car KW increased load capacity KW high-strength steels KW evaluation of strength and stiffness of the gondola car body structure KW gondola frame structure buckling analysis JO Bulletin of scientific research results AU Orlova, A.M. AU Demin, K.P. AU Popesku, R.V. PY 2024 IS 2024 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"