TY JOUR TI A Model to Study the Stability of Freight Train Wagons Moving in Conditions of Mountain Pass Profile and Wind Loads KW Mountain pass area KW traction and braking characteristics KW specialized software KW SolidWorks KW Flow Simulation KW wind load KW longitudinal quasi-static forces KW train model KW safety factor against overturning KW stability of wagons JO Bulletin of scientific research results AU Pudovikov, O.E. AU Kahramonov, S.N. PY 2025 IS 2025 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"