SIMULATION OF RELIABILITY FOR THE TRACTION ROLLING STOCK DURING THE LIFE CYCLE

Great attention is always paid to ensuring the process of effective functioning of traction rolling stock, which is associated with significant costs for its creation and operation. A decisive factor in ensuring these conditions is a comprehensive consideration of all factors affecting its reliable operation. The paper deals with issues related to ensuring the reliability of traction rolling stock at all stages of the life cycle. This involves assessing the impact of factors on ensuring the mentioned reliability, taking into account the stage of the life cycle, their number, and the cost of efforts that ensure a high level of reliability. The expediency of using statistical models for a more detailed study of specific multistage programs is noted. When creating expensive unique complex systems, such as traction rolling stock, the greatest effect in saving material, cost, and time resources, under other equal conditions, will be achieved by breaking down the complex process of creating and operating the system into a larger number of controlled stages, gradually implementing monitoring of the technical condition of traction rolling stock equipment. It is established that with the introduction of each controlled stage into the process, additional time is required for information gathering, analysis of the results obtained, and the development of control actions, as well as additional costs of material, technical, and financial resources. It is investigated that dividing the process into more than twelve stages can only be justified for extremely complex unique systems, the failure of which is completely unacceptable. When creating simple systems for which there is extensive experience in similar developments, it is advisable to reduce the number of controlled stages without compromising reliability. A methodology is proposed that can be used to assess the reliability of any locomotive system with a discrete functioning structure.