V.I. Apatsev, A.V. Podorozhkina
The paper is concerned with the issues of estimation of technological stability of the freight terminal operation. The state of technological stability of the terminal operation is defined as a state in which a random change of technology process factors within the corresponding tolerance during the regulated manufacturing environment does not cause a violation of any reliability parameters out of the tolerance limits determined by the reference and technology documentation.
The estimation of conformity of the stress-strain state (SSS) characteristics of the freight bogie solebar model 18-100 is presented in paper. A comparison between the SSS measured at the bench testing of acoustical-emissive production control of PKB CV MPS Russia and the SSS during service loading is performed. The analysis is based on the finite-element calculations. As a result, it is shown that the bench testing load is within the range of tolerance. Finally, the recommendations for testing loads occurring at the test benching, in particular, in the xlebox unit and review of the fatigue test bench for bogie solebars, are formulated.
H.T. Turanov, S.A. Sitnikov, A.L. Rykov
The paper contains a mathematical model, allowing to determine the tension in the flexible fastening elements of the off-clearance load located with an biased centre of gravity across the freight car with the effects of depression of spring nests of the freight bogie and slope of the carriage underframe towards the load’s centre of gravity.
A mathematical model of a four-wheel locomotive bogie of series VL80 motion in a narrow curve is considered. The ways of position control of the locomotive bogie in the curve are analyzed within the framework of minimizing the angle of attack of the locomotive wheel flanges.
The paper is concerned with the issues of estimation of efficiency of the use of the railways property potential and its compliance with the investment development strategy of the joint-stock company “Russian Railways”. A detailed analysis of the main capital stock structure is presented, including that for separate departments. A necessity of including in the analysis the term of “property capital exchange value” is established.
V.I. Zhmachinsky, V.V. Belyanin
The interaction between the elements of the territorial transport system (TTS) subject to corporate management is considered. The realization of the principles of corporate management of the TTS is assumed by means of the organizational planning method, with its step-by-step scheme proposed.
The paper contains theoretical and practical aspects of the progressive normative method for calculation of expenditures allowing the efficient use of the accounting information for revealing the reserves of cost saving and operational management.
V.A. Korchagin, S.A. Lyapin, D.K. Sysoev
The analysis of the ecological and economical interaction between the motor transport system of the large metallurgical works and environment during the process of delivery of the finished product to consumers is presented in the paper. The proposed model enables to choose the type of delivery providing the maximal ecological and economical operating efficiency of the logistic delivery system and matching of the interests of the consumers, the metallurgical works and the region of location of the metallurgical works.
A.V. Gorelik, P.V. Savchenko
The problem of survivability estimation for the systems of railway automatics and telemechanics in case of the microprocessor interlocking system. The factors of required and available throughout capacity of the station with refusals of the station objects taken into account are proposed as a criteria of survivability.
A factor of quality control in technical maintenance of system and devices of railway automatics and telemechanics (SDRAT) “B”, determined for each of the division of SCB of the joint-stock company “Russian Railways”, is investigated in the paper. A proposed analytical model based on the mathematical tools of theory of design of experiments reveals an influence of the certain factors on the process of technical maintenance and on the factor of quality “B”. The model enables scientific planning of the factor of operation quality of SCB departments and also to control the quality of maintenance of SDRAT.
The proposed method allows debugging of software for real-time calculation systems and relies on the methods of quantitative estimation for quality of debugging by means of the summarized indices.
The main types of damage caused by impulse nature of the traction loading on the railways are revealed and the capacitive energy storage devices are proposed in order to reduce the damage amount. The qualitative and quantitative analysis of the various energy supply irregularity figures of the system of traction electric supply on the railways is performed. A review of modern energy storage devices is presented and the most appropriate for the railways are suggested. Finally, a description of the main operative functions of the energy storage devices included in the system of traction electric supply is given.
The principles of development the prediction mechanism for social engineering ship control systems are investigated in the paper. The analysis of practical realizability of the mechanism in the expert systems providing ship operating safety is also presented.
A. R. Bakirov
The statistic models of the main parameters of the city’s route system which effect the energy exploitation characteristics of the traction motors of the rolling-stock, are analyzed in the paper. The statistical laws for railway haul lengths, average speed of the rolling-stock on the railway hauls for various city tram route systems.
V.E. Burak, S.A. Doncov
A multilateral method for generalised ecological estimation of various types of road concrete mix, machines and laying technologies, including into consideration the physicochemical and biological methods of environment monitoring, is presented in the current paper. The results of the performed ecology modelling may be taken into account for development of the environmental protection during the road-building.