TY JOUR TI Modeling the Impact of a Freight Wagon Wheel with Two Non-Rejection Flat Spots on the Railway Track KW railway transport KW wheelset KW flat spot KW dynamic load KW “wheel — rail” system KW mathematical modeling KW non-rejection defect KW Pauk system (Automatic Derailment Control System) KW impact KW track JO Proceedings of Petersburg Transport University AU Adadurov, A.S. AU Podgrebennyy, I.M. AU , .. AU Comaev, P.I. PY 2026 IS 23 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"