TY JOUR TI Investigation of stress-strain state at contact of cylindrical surfaces of parts of railway rolling stock KW contact strength KW stress-strain state KW adhesion KW friction JO Bulletin of scientific research results AU Krotov, S.V. AU Kononov, D.P. PY 2022 IS 2022 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"