This paper determines the load on the load-bearing structure of a universal gondola car during the transportation of cargo with a temperature of 700 °C in it. It has been established that the maximum equivalent stresses, in this case, significantly exceed permissible ones. The maximum temperature of the cargo, at which the strength indicators of the carrying structure of the gondola do not exceed the permissible values, is 94 °C. At the same time, the temperature of the cargo transported in the cars by rail can be much higher. In this regard, in order to use gondola cars for the transportation of cargoes with high temperatures, it is possible to arrange them in heat-resistant containers of open type – flatcars. Therefore, in this study, a structure of the flatcar with convex walls has been proposed. Such configuration of the sidewalls makes it possible to increase the usable volume of the container by 8 % compared to the prototype. As a flatcar material, a composite with heat-resistant properties is used. To justify the proposed solution, the strength of a flatcar was calculated. It has been established that the maximum equivalent stresses in the carrying structure of the flatcar are about 300 MPa and do not exceed permissible ones. To determine the main indicators of the dynamics of the gondola car loaded with flats, its dynamic load was mathematically modeled. The calculation results showed that the accelerations that operate in the center of the mass of the load-bearing structure of a gondola car are about 1.5 m/s2. The vertical dynamics coefficient is 0.22. The estimated dynamics indicators are within the permissible values. The study reported here could contribute to improving the efficiency of the use of gondola cars and to further advancements in the design of innovative vehicles
Purpose. The aim of the work is to study the climate risks problem in transport systems and to form recommendations for strategic decisions on the adaptation of transport in Ukraine to the occurrence of adverse effects as a result of climate hazard. Research methods. The research has been carried out with the statistical analysis and synthesis methods. Results. The study of climate change in the world and Ukraine, which indicates the need for new effective methods and proposals that would take into account the peculiarities of the national transport system and ensure the implementation of the strategic approach concept to transport management in climate risks, has been carried out. A precautionary attitude to extreme weather is the basis for the strategic decisions formation at the national level. The main stages of the strategic approach to climate risks in transport have been formulated. Scientific novelty. The results of the study allow to form the scientific basis of the development strategy of Ukrainian transport industry in the conditions of natural dangers and risks growth. Practical significance. This paper determines the strategic measures of adaptation of the transport system to climatic risks, which are formed due to the implementation of a set of organizational, technical, construction and economic decisions. The results can be used in the development of management plans for transport and logistics companies in climate hazard.
Purpose. The study of the real state of master plans of existing industrial enterprises in our country indicates that today the planning decisions of some industrial enterprises, especially metallurgical ones, which were built in the twentieth century, to a large extent do not correspond to the classical principles of designing master plans. Achieving the economic effect of production at the enterprise depends on the enterprise’s logistics. Therefore, the purpose of the work is to study the problem of the influence of existing master plans on the way to improve the transport service of the enterprise’s workshops and the efficiency of the industrial enterprise logistics as a whole. Research methods The study used methods of analysis and synthesis to study the issue, as well as analysed the main scientific publications on the impact of existing master plans on the industrial enterprise’s logistics. Results. In the work, using the experimental method of data analysis of the implemented enterprises’ master plans, a study was made of existing master plans’ influence on improving the workshop transport service of the enterprise and the efficiency of the industrial enterprise logistics as a whole, which indicate the need for new effective methods and proposals that take into account the transport functioning peculiarities. The scientific novelty lies in the development of a general method for the impact determining of existing schemes of master plans on transport costs and emergency occurrence. The main direction of improving the transport services efficiency for an industrial enterprise and logistics, in general, is a comprehensive reconstruction of the enterprise territory, taking into account the performance of transport and storage works in order to increase the efficiency of the territories using, reduction of auxiliary production, re-profiling, placing adjacent or other non-production functions, solving environmental problems based on the best domestic and foreign scientific developments. The practical significance of the study is the results of the analysis of technological planning solutions and the proposed evaluation criteria. The presented theoretical provisions, which are based on the experimental method of analysing the data of the implemented master plans, made it possible to conduct a comprehensive assessment of the current state and use of the enterprise’s territory and can be further used in the development of new technologies, technical means, and relevant technological planning solutions.
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