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Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2926
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Документ Переходные и стационарные режимы в системе с ограниченным возбуждением(НТУ "ХПИ", 2007) Перепелкин, Николай Викторович; Михлин, Юрий ВладимировичTransient in a non-ideal system with limited excitation, where an interaction of engine and linear elastic subsystem takes place, is considered. The transient in described by the multiple scales method. Possibility of transfer to stationary regimes, including a resonance regime, is considered. Numerical simulation confirms an efficiency of the obtained analytical solutions.Документ Моделироавние и численный анализ сварных узлов циркуляционного насоса с технологическими дефектами(НТУ "ХПИ", 2007) Кедровская, Ольга Валентиновна; Мартыненко, Геннадий Юрьевич; Пирогов, А. Д.In article the scheme of the goods accounting at the retail trade firm is considered, necessity of the computerized of the goods accounting as the basic parameter of work of trade enterprises is retail commodity circulation shows.Документ Расчет посадок с натягом при овальности и эксцентриситете соединяемых деталей на основе ПК ANSYS(НТУ "ХПИ", 2007) Перин, А. П.; Андреев, Арнольд ГеоргиевичIn this paper the mode of deformations of interference fit of bush and shaft in various ways of fitting was analyzed, namely round shaft and round aperture of the bush, oval shaft and round aperture of the bush, round shaft and bush with eccentricity, oval shaft and bush with eccentricity and the angel 0, 45 or 90 degrees between out-of-roundness and eccentricity. Hertzian problem is solved by the program complex ANSYS. Results are given in the form of tables and drawings.Документ Переходные процессы в системах с двумя степенями свободы, содержащих существенно нелинейный гаситель(НТУ "ХПИ", 2007) Михлин, Юрий Владимирович; Руднева, Гаянэ Валериковна; Бунакова, Т. В.Transient in a system containing a linear oscillator, linearly coupled to an essentially nonlinear attachment with a comparatively small mass, is considered. A damping is taken into account. The multiple scales method is used to construct a rocess of transient in the system under consideration. A transfer of energy from the initially perturbed linear subsystem to the nonlinear absorber can be observed. A similar construction is made to describe the transient in a system which contains a linear oscillator and a vibro-impact attachment with a comparatively small mass. A transient in such system under the external periodical excitation was considered too. Numerical simulation confirms an efficiency of the analytical construction in both systems.Документ Эффективность некоторых методов оптимизации упруго-демпферных подвесок агрегатов(НТУ "ХПИ", 2007) Филипковский, С. В.The research is dedicated to optimization of suspensions defending the equipment of flight vehicles from g-loads. The purpose of activity is to check the efficiency of different optimization methods. The oscillations of a system with a linearly-elastic spring and non-linear damping are considered. An objective function is the maximum acceleration of suspended unit determined during the integration of the motion equation. The problem differs by that the objective function is rough and ravine, and range of varied parameters is jagged. The hybrid adaptive method of optimization allows to solve a problem of optimal synthesizing and displays a high efficiency in comparing with methods proposed in known FEM complexes.Документ Моделирование и численный анализ напряженно-деформированного состояния фрагмента поясничного отдела позвоночника(НТУ "ХПИ", 2007) Гречихина, Н. В.; Сукиасов, Владимир ГеоргиевичThe comparative analysis results of stress state of spine in the normal state and with fixing are presented. Calculations are executed by finite element method in three-dimensional statement. Criterion of the comparison is the stress state level of vertebra and fix by physiological loading.Документ Особенности твердотельного геометрического моделирования машиностроительных объектов(НТУ "ХПИ", 2007) Красников, Сергей Васильевич; Руденко, Сергей СергеевичThe problems, related with programming of CAD systems for geometrical modeling of mechanical construction, are considered. The cast of common standards related with modern CAD systems a described. Variant of necessary parameters in future design of CAD systems for mechanic a done.Документ Обзор решений задач ползучести и разрушения елочных замковых соединений лопаток ГТД(НТУ "ХПИ", 2007) Анищенко, Галина Оттовна; Морачковский, Олег КонстантиновичThe survey of solutions of problems of creep and fracture of the fur-tree lock of connection of shovels of aviation gas turbine engines is presented. The researches of different authors containing numerical solutions of plane and space problems for static and dynamic creep-damage are considered.Документ Прискорення газовим потоком руху краплі, шо випаровується за законом Срезневського(НТУ "ХПІ", 2007) Ольшанський, В. П.; Лавінський, Володимир Іванович; Ольшанський, Станіслав ВасильовичThe motion of an evaporating drop, as material point of decreasing mass, is described by nonlinear differential equation with variable coefficients. After special transformation at equalvariable motion of gas the analytical solution of Cauchy problem is found in Airy functions.Документ Определение жесткостных характеристик радиальных магнитных подшипников на двух кольцевых постоянных магнитах(НТУ "ХПИ", 2007) Мартыненко, Геннадий ЮрьевичIn the paper the procedure of calculation of power descriptions and definition of quasielastic coefficients for the radial magnetic bearings on two permanent circular magnets is offered. This procedure is based on the finite element analysis. Comparison of design and experimental data is xecuted. Comparative description of two types of the magnetic bearings is carried out.Документ К вопросу о диагностировании состояния металлоконструкции углеперегружателя(НТУ "ХПИ", 2007) Гусев, Ю. Б.The method of diagnosing of the state of metalware of coal-loader is described in the paper. The research data are presented on the example of crane-loader made by FEB, FTA, Germany.Документ Программные средства для конечно-элементного моделирования двумерных задач теории ползучести(НТУ "ХПИ", 2007) Бреславский, Дмитрий Васильевич; Корытко, Юлия Николаевна; Лысак, П. М.The paper describes the program codes has been developed in NTU 'KhPI' for the numerical simulation of two-dimensional problems of creep theory, such as plane stress, plane strain and generalized stress-strain state. The Finite Element Method (FEM) jointly with multi step time integration methods are used as a method of computer simulation. The software structure, as well as verification of numerical results are discussed.Документ Вимушені коливання циклосиметричного лопаткового апарату з випадковим технологічним розладом(НТУ "ХПІ", 2007) Жовдак, В. О.; Ларін, Олексій Олександрович; Головко, О. М.Investigation of the harmonic vibration of the lump-mass discrete cyclic model of bladed disk of the first stage of the stem turbine with the random mistuning is carried out by means of Monte-Carlo method. Various realizations of the mistuning and corresponding to them amplitude-frequency characteristics are investigated. The expectations and variances for the frequency-response curve are built.Документ Дослідження напружено-деформованого стану трійникових з'єднань трубопроводів гідросистем(НТУ "ХПІ", 2007) Бабич, О. А.; Трубаєв, Олександр Іванович; Чалий, І. В.The stressedly-deformed state of t-junction of connection of pipes of a hydraulic drive press under an operation of internal pressure is examined. Two models of constructive realization of connection were considered.Документ К вопросу о тестовых задачах для кругового цилиндра(НТУ "ХПИ", 2007) Ткачук, Николай НиколаевичJn the paper the construction of a series of master solutions for circular cylinder is discussed. These solutions were applied to verify a finite element model with two cases of boundary loading.Документ Анализ динамических реакций при падении контейнера-упаковки с радиоактивными отходами(НТУ "ХПИ", 2007) Бирюков, О. В.; Андреев, Юрий Михайлович; Лавинский, Денис Владимирович; Соболь, Владимир НиколаевичThe method and results of the analysis of dynamic reactions, kinematics parameters and stress-strain state for the falling nuclear waste package are presented. The analysis of impact interaction by using the SAE of multibody system dynamics is done. The stress-state analysis of the package elements by finite element method (FEM) is given.Документ Экспериментальное исследование процессов ударного нагружения тонких пластин(НТУ "ХПИ", 2007) Бреславский, Дмитрий Васильевич; Наумов, Иван Владимирович; Онищенко, А. В.The paper describes the experimental facilities had been developed in NTU «KhPI» for the modeling of the impact interaction between the pellet and thin rectangular plate. The experimental unit, as well as its components, are described. The example of the experimental unit's working at the testing process is given.Документ Определение точности метода фотоупругости(НТУ "ХПИ", 2007) Тесленко, А. А.New method of accuracy definition for the method of photoelasticity is considered in the paper. Essence of a method consists in the modelling way of accuracy determination. Accuracy is determined in comparison of initial (modelling) stresses and stresses determined in the simulated way of measurement. The stresses determined in real experiment are used as initial (modelling) stresses. The correctness of this method is investigated.Документ Уравнение состояния циклической ползучести бронзовых сплавов(НТУ "ХПИ", 2007) Бреславский, Дмитрий Васильевич; Татаринова, Оксана Андреевна; Хорошилов, О. Н.The paper describes the technique for derivation of static and cyclic creep-damage constitutive equations for bronze alloys under the high temperatures (0,9 - 0,95 of melting temperatures). The use of the developed technique is demonstrated on the examples for two alloys, for which the experimentally and numerically determined values are compared. The derived state equations were used for simplified analysis of the strain and damage levels in bronze billets in the technological process of continuous casting.Документ Напряженно-деформированное состояние зубчатых передач с позиций термоконтактного деформирования в упруго-пластической области и в условиях ползучести(НТу "ХПИ", 2007) Приймаков, А. Г.; Устиненко, Александр Витальевич; Приймаков, Григорий АлександровичContact task in a resiliently-plastic area at presence of chafing in the contact area is considered. The method of determination of thermal-contact strains and stress of some stratum, being under the surface stratum of tooth in the conditions of creep is offered.