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Application of APM WinMachine Software for Design and Calculations in Mechanical Engineering
(Дніпропетровський національний університет залізничного транспорту імені академіка В. Лазаряна, Дніпропетровськ, 2016) Neduzha, Larysa; Shvets, Anzhela O.
EN: Purpose. To conduct the research at all stages of design, development, operation, residual operation life determination, namely, preliminary study, action principle choice, design of draft and technical projects, their optimization, preparation of design documentation and control information for automated production, comprehensive engineering analysis, it is required to use the latest computer technologies. Their use can not only present data and information in some way, but also gives the opportunity to effectively and directly interact with the information object that is created or demonstrated. Methodology. To perform engineering calculations associated with the analysis of the strength of machines, mechanisms, constructions one uses both analytical and numerical methods in practice. The most common method for analysing the stress-strain state of object models, obtaining their dynamic and stability characteristics at constant and variable modes of external load is the finite element method, which is implemented in many famous and widespread software products, providing strength calculation of models of machines, mechanisms and structures. Findings. The use of modern software for designing machine parts and various types of their joints and for strength analysis of structures is justified. Colour charts for distribution of stresses, displacement, internal efforts, safety factor and others allow accurate and quick identification of the most dangerous places in the structure. The program also provides an opportunity to «look» inside the elements and see the resulting distribution of internal force factors. Originality. The paper considered the aspects, which are unexplored at present, associated with the current state and prospects of development of industrial production, the use of software package for design and calculations in the mechanical industry. The result of the work is the justification of software application for solving problems that are aimed at using research findings for various practical tasks in specific fields of mechanical engineering. Practical value. Compared with other software systems, popularity of the considered one is explained by easy mastering of the system, quick implementation both in training and in production process The organizational structure, «friendly» graphical interface and accessible language make learning and use of the program very convenient. These and other factors actually reduce the time for project implementation, emphasize the relevance and the practical importance of the software system, which is appreciated by its users.
Influence of Loading from the Axle of a Gondola Car on its Dynamic Indicators and Railway Track
(Дніпровський національний університет залізничного транспорту імені академіка В. Лазаряна, Дніпро, 2019) Shvets, Anzhela O.; Bolotov, Oleksij O.
EN: Purpose. Increasing the maximum loading from the car axle on the rails during transportation of goods and the speed of movement of railway vehicles will enhance the integration processes between the countries. In order to ensure safe and reliable traffic at the railways it is necessary to improve control, quantitative evaluation of the dy-namic loading of the rolling stock, which in the process of its operation is a relevant scientific and technical prob-lem. The purpose of this work is to study the influence of the axle loading increase in gondola cars, taking into ac-count the possible speed increase on their main dynamic indicators and indicators of interaction of rolling stock and track. Methodology. The study was carried out by the method of mathematical and computer simulation of the dy-namic loading of a gondola car using the model of spatial oscillations of the coupling of five cars and the software complex developed in the branch research laboratory of the dynamics and strength of rolling stock (BRL DSRS). The initial data for research are as follows: the movement of gondola car of the model 12-532 with typical bogies of 18-100 at the speeds ranging from 50 to 90 km/h in curves with radii of 350 and 600 m, with superelevation of 130 and 120 mm, respectively. Findings. The article analyzes the dynamic qualities of a rolling stock using the example of gondola cars, the calculations are performed using the package of applied programs with sufficient accuracy for practice. During the theoretical studies and simulation, taking into account the processes of freight car oscillation in case of increasing the axle loading, the dependences of the main dynamic parameters, taking into account the movement speed were obtained. Originality. Originality of the work results lies in the study of the influence of in-creasing the axle loading in gondola cars, taking into account the possible movement speed increase on the dynamic loading in order to solve the problem of forecasting the rolling stock dynamics. The results of theoretical studies, taking into account the movement speed in the curved track sections of small and medium radius were obtained for the first time. Practical value. The application of these results will contribute to improving the traffic safety of freight cars and will improve the technical and economic performance of railway transport.
Spatial Vibration of Cargo Cars in Computer Modelling with the Account of Their Inertia Properties
(Kaunas University of Technology, Kaunas, 2010) Myamlin, Serhiy V.; Ten, Oleksandr O.; Neduzha, Larysa O.; Shvets, Anzhela O.
EN: The papers describes some methods for more exact computation of the freight wagon's inertial characteristics, that is necessary for performing more exact computer simulation of the railway vehicle dynamics. Comparison of the simulation results with the test data shows the appropriate coincidence between them that confirms the mathematical model's adequacy.