Zobrazeno 1 - 10
of 58
pro vyhledávání: '"D. V. Rudavs'kyi"'
Publikováno v:
Materials Science. 57:48-52
Publikováno v:
Archives of Materials Science and Engineering. 2:59-67
Purpose: The aim of the proposed research is to create a calculation model of surface fatigue crack growth at the axle of railway wheelset working under operational loads. Design/methodology/approach: The energy approach of the fracture mechanics was
Publikováno v:
Materials Science. 56:174-180
We study the kinetics of propagation of fatigue cracks on the surface of side frame of a rail car with regard for the stochastic nature of the operating load. Its dependence on the initial geometry of the crack is established. Moreover, under given l
Publikováno v:
Materials Science. 53:623-629
We analyze the main types of defects appearing near the sites of concentration of mechanical stresses in the material of tires of the wheels of electric locomotives. We study the distribution of stresses near the areas of potential appearance of fati
Publikováno v:
Materials Science. 52:485-491
A new procedure for the numerical evaluation of the residual service life of a wheelset axle is proposed. The procedure is based on the kinetic equation of fatigue crack growth obtained within the energy approach of the fracture mechanics of material
Autor:
D. V. Rudavs’kyi, I. Ya. Dolins’ka, V. R. Bas, R. Ya. Yarema, V. R. Skal’s’kyi, O. S. Dubyts’kyi
Publikováno v:
Strength of Materials. 48:220-226
The calculation procedure for the period of subcritical fatigue crack growth near the lower design-envisaged hole of the pivot joint-coupled bogie frame of the electric locomotive is proposed. The procedure is based of the calculation model of the fa
Publikováno v:
Materials Science. 51:475-480
We propose a technique for the evaluation of the residual life of a hydrogenated element of a pipe containing a cracklike defect on its inner surface. The kinetics of crack propagation is studied with regard for the influence of the hydrogen concentr
Autor:
D. V. Rudavs’kyi
Publikováno v:
Materials Science. 51:348-357
On the basis of the energy approach of fracture mechanics, we construct a computational model of propagation of plane fatigue macrocracks in three-dimensional deformable elastoplastic bodies. We deduce a kinetic equation that enables us to determine
Publikováno v:
Materials Science. 51:281-289
We propose a numerical method of evaluation of the period of initiation of a fatigue microcrack at the tip of a surface cavity-like defect in the race of an axle bearing of the locomotive. In this method, we use a model based on the energy approach o
Publikováno v:
Scopus-Elsevier
We propose a method for the evaluation of the residual life of a spring plate of a truck containing a semielliptic crack under the action of cyclic loading and a hydrogen-containing medium. The method is based on the numerical model of fatigue crack