TY JOUR TI THE EFFECT OF EXTERNAL AND INTERNAL PRESSURE ON THE STIFFNESS OF BOILER SHELLS OF THE TANK CAR KW tank car KW oscillations KW pressure KW stability KW finite element method KW characteristics JO Transport engineering AU Grigor'ev, P.S. AU Korzhin, S.N. AU Ibodulloev, S.R. PY 2024 IS 2024 PB Bryansk State Technical University