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September 2008 - present
September 2011 - June 2019
Publications
Publications (8)
The development of the methods for modeling the processes of accumulation of the rolling contact fatigue damage and wear of the wheels of the railway rolling stock and the rails is particularly relevant due to the increase in the number of damage in the recent times. The work is underway to improve the chemical composition and the technology of pro...
An algorithm for computer modeling of the processes of wear and accumulation of the rolling contact fatigue (RCF) damage in railway vehicle wheels is introduced. The combined criterion of contact fatigue is obtained on the basis of the specific strain energy and of the criterion theories of strength. The proposed criterion is tested on the Hertzian...
An algorithm for computer modelling of the process of accumulation of rolling contact fatigue (RCF) damage in railway vehicle wheels is introduced. The amplitude of maximum shear stress is adopted as a criterion for fatigue failure during rolling. RCF curves for wheel steels with a hardness 255–330 HB are obtained by processing the results of the R...
This paper presents the results of the International Benchmarking of Longitudinal Train Dynamics Simulators which involved participation of nine simulators (TABLDSS, UM, CRE-LTS, TDEAS, PoliTo, TsDyn, CARS, BODYSIM and VOCO) from six countries. Longitudinal train dynamics results and computing time of four simulation cases are presented and compare...
Possibility of applying of the Hertz solution at close values of the radii of curvature of the pro-files of bodies is analyzed. Research is carried out on the example of contact problem for wheel and rail in case when the contact patch is located on the fillet parts of the wheel and rail. The same problem is solved by using finite element method. T...
Values of penetration factor of wheel and rail surfaces that is used on application of fast algorithm for solution of normal contact problems are defined. Three cases had been considered: contact area has not strongly expressed spatial character; contact patch is situated nearby middle of rail rolling surface, radii of curvature of wheel and rail p...
A heavy haul train and car dumper model was created to analyse train longitudinal dynamics during dumping. Influence of such factors as performance curve of draft gears, total free slack in couplers, operating mode of train positioner and braking of last two cars of train on the in-train forces was considered.
The fast algorithm for wheel and rail conformal and multipoint contact modeling is developed. The algorithm for solution of the normal contact problem does not require calculation of the integrals therefore CPU time is decreased. The FASTSIM algorithm is used for solution of the tangential contact problem. Results of solution with the fast algorith...
