Кафедра "Теоретична та будівельна механіка"<br>(з 2022 р увійшла до складу кафедри Технічна механіка ДІІТ) (з 2016 року об’єднано каф. "Теоретична механіка" та каф. "Будівельна механіка")

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http://crust.ust.edu.ua/handle/123456789/9307

ENG: Department "Theoretical and Structural Mechanics" "Theoretical Mechanics" and "Structural Mechanics"

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Dynamic Sustainable Processes Simulation to Study Transport Object Efficiency
(MDPI, Basel, Switzerland, 2022) Bondarenko, Iryna; Severino, Alessandro; Olayode, Isaac Oyeyemi; Campisi, Tiziana; Neduzha, Larysa
ENG: The development of reliability theory has led to the setting of tasks requiring consideration of the efficiency and functional safety of technical objects of transport over the life cycle. The paper demonstrates the possibility of using the universal laws of elastic wave theory to describe natural phenomena occurring in complex dynamic systems, on the examples of solving issues arising in the interaction of rolling stock and the railway track. The accounting of the time component and the ability of elastic waves to propagate energy in time and space allowed considering any interaction process as a chain of processes, incidence-reflection-refraction of force impulses of interaction. Understanding the physics of dynamic processes that occur in objects while performing their intended functions allows developers to improve objects in such a way as to minimize their life cycle cost and maximize their ability to perform their intended functions under different operating conditions. In addition, it allows the expansion of existing methods and approaches to diagnostics of dynamic transport systems. All this is a base for making it possible to develop an innovative and effective tool for engineers and scientists to assess the impact of technosphere transport objects on human habitats.
The Role of Cold Ironing in Maritime Transport Emissions
(AIP Conference Proceedings, 2022) Barberi, Salvatore; Campisi, Tiziana; Neduzha, Larysa
ENG: Maritime Transport is one of the sources of atmospheric pollution, contributing with gaseous emissions mainly caused by marine engines and fossil fuel combustion, and characterized by the production of substances such as CO2, CO, NOx, SOx and PMx, harmful to the environment and human health. Cold Ironing, also known as Alternative Maritime Power (AMP) or Shoreside Supply, is one of the most relatively recent technologies designed to reduce emissions in the maritime industry: it consists in a three-parts system to connect shore-side located power sources, especially with renewable energies and smart grids, to on-board systems able to receive and store electricity, through intermediate connection devices that allow electricity to flow from the port into ships. This technology has been proved to bring financial and environmental benefits, considering also the rise in fuel costs; however, it is still facing some challenges in getting widespread worldwide, mainly due to retrofitting and upgrade costs. It will also require more specific policies and regulations involving stakeholders of different technical and geographical nature. Scientific research is however promising under all these aspects, as it is demonstrating significant reductions in terms of emissions and externalities.
Using Detailing Concept to Assess Railway Functional Safety
(MDPI, 2023) Bondarenko, Iryna; Campisi, Tiziana; Tesoriere, Giovanni; Neduzha, Larysa
ENG: The ability to assess the risks of the functional safety of railway tracks allows harmonizing characteristics of track elements under certain operating conditions under certain maintenance for the efficient use of the track structure throughout its life cycle. The concept of detailing conditions of the interaction of the rolling stock and railway track was used for the productive solution of tasks of infrastructure functional safety assessment. The paper formed an approach to the analytical solution of determination problems of deformability parameters over time using the elastic waves theory. The formation method of interconnections between the technical and economic aspects of the operation of railway infrastructure was proposed. The criteria of deformability work and intensity of use were utilized for the effective use of the track structure through its life cycle. The results of calculations are presented to assess changes in the deformability behaviour of the track elements and structure when the force and speed parameters of the operating conditions change, as well as the algorithm of the method for estimating the operation deformability of the railway track. Thus, the proposed approach can be adapted to optimize objects by railway functional safety assessment at the stage of object operation simulation.

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