TY JOUR TI IMPROVEMENT OF THE DIRECT METHOD TO DETERMINE STRESS INTENSITY FACTORS OF FOR WHEEL PAIR AXES KW axis KW wheel pair KW stress state KW method KW finite elements KW factor KW stress KW criterion KW quality KW grid JO Transport engineering AU Boldyrev, A.P. AU Zhirov, P.D. AU Kravcov, S.A. AU Lozbinev, F.Y. PY 2024 IS 2024 PB Bryansk State Technical University