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Документ Начальное деформирование упругого полупространства при кинематическом воздействии(НТУ "ХПИ", 2013) Янютин, Е. Г.; Богдан, Д. И.; Толбатов, Евгений ЮрьевичThe elastic oscillations of a half-space in case of the kinematical influence set on its surface are described in the article. Nonaxisymmetric statement of the second boundary value problem is considered. The problem is solved by using of expansion in Fourier series. The numerical example on finding of movings on depth of the half-space is considered at the known kinematical impact on it's surface.Документ Перспективы применения импульсных струй жидкости для тушения газовых факелов(НТУ "ХПИ", 2013) Семко, А. Н.; Бескровная, М. В.; Украинский, Ю. Д.; Виноградов, С. А.; Грицына, И. Н.Experimental studies of putting out of gas blowout by means of high-speed impulse liquid jets generated by a powder pulse-jet water canon have been carried out. The speed of impulse jet depending on charge energy ranged in the experiments from 300 to 600 m/s. The speed of the head section of the jet has been measured directly before the torch by means of a non-contact laser speed measuring device, the jet photographing has been carried out. It has been shown that around the high-speed liquid impulse jet in the air is formed a high-speed cloud of large cross-section splashes that efficiently knocks down the flame of the gas torch at distances of 5-20 m from the unit.Документ Моделирование течения крови в патологически искривленных сосудах(НТУ "ХПИ", 2013) Оверко, В. С.; Бескровная, М. В.Mathematical simulation of the blood flow in the pathologically curved blood vessels was performed. Influence of degrees of the curvature by the intensity and the features of the secondary and the reverse blood flow in the vessels at different times cardiac cycle was determined. The loss pressure for different level of the pathological curvature was defined.Документ Функция Ламберта в задаче баллистики материальной точки(НТУ "ХПИ", 2013) Ольшанский, В. П.; Ольшанский, Станислав ВасильевичIt is shown that the use of the Lambert function and tables greatly simplifies the calculation of range and other parameters of the trajectory of the motion of a particle in a gas medium with a linear resistance.Документ Умови формування пружних переміщень у технологічній системі при механічній обробці(НТУ "ХПІ", 2013) Новіков, Федір Васильович; Іванов, І. Є.The paper offers a theoretical approach to the calculation and analysis of the accuracy of processing parameters with the elastic displacements occurring in the technological system. On the basis of the theoretical results obtained implementing the conditions for the best possible performance for a given precision machining machined surface. Practical recommendations for the effective management of the cutting process.Документ Математична модель визначення шорсткості поверхні при абразивній обробці(НТУ "ХПІ", 2013) Новіков, Федір Васильович; Нежебовський, В. В.; Шкурупій, Валентин ГригоровичThe results of theoretical studies of the formation of surface roughness during abrasive machining. The classification structures of the rough surface layer. The basic terms of reducing the surface roughness and practical recommendations for the effective implementation of methods of abrasion.Документ Дослідження робочого процесу вихрового ступеня за допомогою обчислювального експерименту(НТУ "ХПІ", 2013) Ніколаєнко, Людмила Михайлівна; Лугова, Світлана Олегівна; Салтанов, Станіслав Ігоревич; Котенко, Олександр ІвановичIn this article the analysis of existing methods of calculation of the characteristics of the vortex stage. With the use of the software product of ANSYS CFX 12.0 is a numerical study of the flow in the liquid part of the vortex stage of open type with side channel for a different number of blades, received by the flow pattern and the integral characteristics of the vortex extent.Документ Дослідження системи управління вібраційним об'єктом(НТУ "ХПІ", 2013) Мигущенко, Руслан Павлович; Кропачек, Ольга Юріївна; Семенченко, Анастасія Сергіївна; Матяш, Катерина ВолодимирівнаThe paper deals with the construction management industry vibrating object. In order to develope the control system chosen object of study, the analysis of its operation, reviewed and analyzed the possible models under consideration of the objects elected in the major areas of research.Документ Оцінка ефективності інформаційної технології предметно-орієнтованого математичного моделювання(НТУ "ХПІ", 2013) Межуєв, В. І.The evaluation of effectiveness of the Information Technology of Domain-Specific Mathematical Modeling (ITDSMM) is given. The reduction of amount of operations needed for development of metamodels in the case of using ITDSMM is proven. The optimization task of choosing the most effective information technology by selection and comparison of the multiple features in herent to the DSM, DSMM and UML technologies is solved.Документ Сравнительный анализ двух подходов к исследованию параметрических колебаний ортотропных пластин сложной формы(НТУ "ХПИ", 2013) Мазур, Ольга СергеевнаParametric vibrations of the orthotropic plates with complex form and various boundary conditions are studied by two approaches. The first method uses the movement equations in terms of displacements; the second approach is based on using the equations in mixed form. The results obtained by the presented algorithms are compared for T-plate.Документ Метод визначення параметрів синусоїдальних відбивачів інфрачервоних обігрівачів(НТУ "ХПІ", 2013) Максимова, М. О.The method of determining of rational parameters of the form and location of sinusoidal infra-red reflectors with the beforehand set properties for heating technical and technological objects are obtained. The algorithms of modeling of motion of reflected rays are created to be able to control the intensity of thermal stream.Документ Численное моделирование рабочего цикла дизеля с непосредственным впрыском. Прогнозирование эмиссии сажи и оксидов азота(НТУ "ХПИ", 2013) Левтеров, Антон Михайлович; Левтерова, Людмила ИвановнаThis article discusses the construction of a mathematical model of the operating cycle of diesel engine with direct injection. This paper also provides that result of modeling becomes possible predict the performance of diesel engine on traditional and alternative fuels with the emission of harmful substances in the exhaust gases, including carbon black, which is particularly important for this type of piston engines.Документ Анализ математических моделей механизма сажеобразования при сжигании углеводородных топлив(НТУ "ХПИ", 2013) Левтеров, Антон Михайлович; Левтерова, Людмила ИвановнаThis article discusses the construction of a mathematical model of the operating cycle of diesel engine with direct injection. This paper also provides that result of modeling becomes possible predict the performance of diesel engine on traditional and alternative fuels with the emission of harmful substances in the exhaust gases, including carbon black, which is particularly important for this type of piston engines.Документ Визначення критерія кавітації лабіринтно-гвинтового насоса(НТУ "ХПІ", 2013) Лебедєв, Антон ЮрійовичThe method of calculation and value of criterion of cavitations of labyrinth-spiral pump is resulted in the article. The analysis of influence of structural and working parameters of pump and properties of working liquid is conducted on this criterion. Finding allows during the design of such pumps to estimate probability of origin of cavitations on his entrance.Документ Совершенствование гидроимпульсаторов изменением гидравлических параметров ударного трубопровода(НТУ "ХПИ", 2013) Кононенко, Анатолий Петрович; Овсянников, Владимир Павлович; Оверко, М. В.Perfection of working process of the hydraulic impulsator by change of parametres of the shock pipeline by means of the jet diode is offered. The received efficiency by a graphic method and a method of numerical modelling in the environment of package MatLab is shown. The estimation of the received results and a direction of the further researches is presented.Документ Модель рабочего процесса эрлифта с учетом структуры газожидкостных образований снарядного водовоздушного потока(НТУ "ХПИ", 2013) Кононенко, Анатолий Петрович; Калиниченко, Валерий ВикторовичThe mathematical model of operating process of the airlift is worked out with the projectile structure of the water-air stream in a lifting pipe taking into account the structure of the gas-liquid formations, that allows to define both the quantitative hydrodynamic parameters of the two-phase mixture and calculation descriptions of lift. Adequacy of mathematical model is confirmed by data of experimental researches of work of the airlift.Документ Моделювання тепло- та масообмінних процесів у фільтрі твердих частинок дизеля. Частина 4 : Розрахункове дослідження робочих характеристик фільтра(НТУ "ХПІ", 2013) Кондратенко, Олександр Миколайович; Строков, Олександр ПетровичThe present paper describes the methodology and results of calculation research of the performance of the filter element of diesel particulate filter. Also this article present data on the identification of parameters of the mathematical model of the process of movement of diesel exhaust gases in the module of filter element.Документ Аналіз стану та тенденція використання комерційних програмних пакетів для одно- та двокомпонентної суміші(НТУ "ХПІ", 2013) Колісніченко, Едуард Васильович; Найда, Максим Васильович; Ткачук, Юрій Якович; Хованський, Сергій ОлександровичPowered by trend analysis and use of software for single- and two-component mixture. The present modeling incompressible fluid flow and gas and liquid flow with a small amount of gas. The conclusion is that modern commercial software products can adequately simulate the complex physical effects of different nature.Документ Застосування нейромережевої моделі для прогнозування стану матеріалу при високошвидкісному деформуванні(НТУ "ХПІ", 2013) Хавін, Валерій Львович; Автономова, Людмила Володимирівна; Марусенко, Світлана ІванівнаThe neural network's model (NN-model) of determining equations of the plastic state of material is in-process presented for the wide range of deformations, speeds of deformations and temperatures. Realization of model is carried out through the neural network-3-th layer of perseptron with one by the hidden layer. It is got optimum architecture, teaching of NN-model is conducted on the base of experimental information for steel 45. For the verification set of data comparing is conducted to the results has been realize with Johnson-Kuke quation.Документ Типізація та моделювання гідравлічних модулів з одноштоковим гідравлічним циліндром(НТУ "ХПІ", 2013) Іваніцькая, О. П.All variety of hydraulic throttle actuators with hydraulic cylinders with a rod can be reduced to 16 hydraulic modules, depending on the direction of movement of the piston, the direction of the load, the presence or absence of restriction (or flow control), and its location in the inlet and drain pipes. Mathematical model of the 16 main types of hydraulic modules with vertical and horizontal hydraulic cylinder with a piston rod.