TY JOUR TI Securing Wagons During Shunting Operation KW Brake shoe KW wagon cut KW shunting operation KW equation of motion KW collision velocity KW wagon cut energy JO Proceedings of Petersburg Transport University AU Smirnov, V.I. AU Vidyushenkov, S.A. PY 2025 IS 22 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"