Open AccessInfluence of geometric elements on the pressure distribution and the state of tension at non-Hertzian wheel-rail contact
Author(s) -
I. Blanari,
Viorel Goanţă,
Mikhail Alexandrov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/997/1/012096
Subject(s) - finite element method , tension (geology) , contact mechanics , elasticity (physics) , axle load , structural engineering , transverse plane , contact force , modulus , mechanics , contact area , elastic modulus , materials science , axle , engineering , physics , composite material , ultimate tensile strength , classical mechanics
In view of the trends of increased traffic speeds, increase axle load, but also the reduction of the losses of material from the wheel and rail due to wear phenomena, the appearance of undulating wear, fractures of the wheel and rail, it is necessary to know the pressure distribution and the state of tension at wheel-rail contact. This can be obtained either by the finite element method (FEM). Using an elastic body modelling, a very rapid FEA model was obtained for solving the pressure distribution at concentrated wheel-rail contact, for real surfaces, modelling absolutely necessary for any study requiring analysis of the state of tension at such a request, for different situations of this interaction, modifying only the input data: geometric model of wheel and rail, longitudinal elasticity modulus, transverse contraction coefficient, load on wheel, etc.