Efficiency of Modernization of Wheel-Motor Blocks (Wmb) Using Anti-Friction Traction Motor Support Bearings (Tmsb)

Капица, М. И.; Hnennyi, О. M.; Bobyr, Dmytro V.

doi:10.15802/stp2018/141178

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…Для прийнятої періодичності ремонту вирішується задача Визначення ймовірності залежних відмов можна виконати з використанням методів експертних досліджень [33], методів нечіткої логіки та нейронних мереж [54]. У загальному вигляді ймовірності виникнення залежних відмов представлені у табл.…”

Section: удосконалення системи утримування локомотивів методи визначе...unclassified

Operation of Locomotives and Locomotive Economy. Organization of Repair and Servicing Economy

Kapitsa¹,

Bodnar²,

Очкасов³

2022

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Section: удосконалення системи утримування локомотивів методи визначе...unclassified

Operation of Locomotives and Locomotive Economy. Organization of Repair and Servicing Economy

Kapitsa¹,

Bodnar²,

Очкасов³

2022

Self Cite

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Choosing the System of Locomotive Maintenance in View of the Effect of Dependent Failures

Bodnar¹,

Очкасов²,

Hryshechkina³

et al. 2019

STP

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Purpose. Improving the efficiency of the use of locomotives by choosing a rational maintenance system that takes into account the assessment of the effect of dependent failures on the cost of their life cycle is the main purpose of this paper. Methodology. The relevance of introducing LCC (Life Cycle Cost) approaches in locomotive facilities is explained by the introduction of new locomotives with on-board control and diagnostic systems, as well as the development of the theory of traction rolling stock maintenance systems. The cost of a locomotive as a traction unit ceases to be the determining factor. This is because the locomotive maintenance and repair cost for the entire period of its operation is much higher than the initial cost of the locomotive. The paper analyses the existing approaches to managing the cost of the life cycle of locomotives at the stages of selecting, updating, upgrading and operating the traction rolling stock. The necessity of improving the methods for assessing the degree of influence of reliability indicators of locomotive assemblies on the choice of the maintenance system and the cost of the locomotive life cycle is substantiated. Findings. It is proposed to use the concept of «the effect of dependent failures» when calculating the cost of locomotive renewal after unscheduled repairs and its life cycle cost. We improved the methods for determining the cost of unscheduled repairs, taking into account dependent failures and the coefficient of assessment of the effect of dependent node failure on the locomotive maintenance system. The proposed coefficient will determine the nodes, the failure of which affects the renewal cost more than their nominal value. It will also help to take into account the probable losses due to node failure during the development and adjustment of the locomotive maintenance system. Originality. For the first time, it is proposed to use the concept of the effect of dependent failures to calculate the locomotive renewal cost when performing unscheduled repairs, as well as the locomotive life cycle cost. Practical value. The improved calculation method for determining the cost of unplanned repairs with account taken of dependent failures can be used to compare and evaluate different variants of the locomotive maintenance system and to develop the locomotive diagnostic systems.

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Research of the Factors Influenced on the Performance of Ukrainiantransport Companies During the Active Military Actions

Kravchenko,

Zhylenko

2023

Econ. upravlin.

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In the conditions of full-scale military aggression of the Russian Federation against Ukraine, the functioning of transport companies has become one of the main factors that ensure a certain level of economic and social stability in the country, as well as national security. The article is devoted to the study of factors that affect the performance of transport companies during the period of active military operations and the determination of a set of measures to increase it. In conditions of rapid and poorly predicted changes, focusing onfinancial results to evaluate the company's performance becomes unproductive. This necessitates the use of key performance indicators of business processes (key performance indicators, KPI). Six basic KPI for transport companies are identified, namely thecompleted order, timeliness of delivery, timeliness of processing documents, average cost per unit of transported products, the ratio of transportation and sales costs, and the level of disposal. It was found that in conditions of active military operations, the performance of transport companies is affected by (1) the degree of destruction of the transport infrastructure, which affects the volume of transportation of goods, passengers and luggage and the possibility of their implementation in general; (2)peculiarities of transport products, namely its intangible nature, i.e. significant direct dependence of the volume of transportation work of transport companies on the reduction of the volume of products produced by enterprises of various industries; (3)blocking customs, which led to an increase in the time of delivery of goods, an increase in the cost of delivery, and a decrease in the volume of transportation. The level of destruction suffered by the railway infrastructure, road infrastructure, aviation infrastructure,and port infrastructure, the amount of direct and indirect damage were analyzed. It was determined that in the conditions of active military operations, it is possible to increase the efficiency of transport companies by applying a set ofmeasures, which will include (1) the introduction of new technologies; (2) expanding the network of partners; (3) focusing on high-margin products and services.

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Efficiency of Modernization of Wheel-Motor Blocks (Wmb) Using Anti-Friction Traction Motor Support Bearings (Tmsb)

Cited by 3 publications

References 3 publications

Operation of Locomotives and Locomotive Economy. Organization of Repair and Servicing Economy

Operation of Locomotives and Locomotive Economy. Organization of Repair and Servicing Economy

Choosing the System of Locomotive Maintenance in View of the Effect of Dependent Failures

Research of the Factors Influenced on the Performance of Ukrainiantransport Companies During the Active Military Actions

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