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Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2556
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Документ Анализ чувствительности и оптимизация кварцевых резонаторов(НТУ "ХПИ", 2005) Симсон, Эдуард Альфредович; Назаренко, Сергей Александрович; Зюзин, А. Ю.Complicated finite-element models of quartz resonators with high geometric and physical self-descriptiveness sensitivity analysis and optimization methods are given in this article. The methods have guiding to orientate on high dimensions of state and design variables. The developed mathematical apparatus application domains are examinedДокумент Аппроксимации Паде и континуализация для одномерной цепочки масс(НТУ "ХПИ", 2005) Андрианов, И. В.; Иванков, А. О.; Матяш, М. В.Various continuous models (CM) for 1D discrete media are under consideration. As example the difference-differential equation, describing a system of connected oscillators, is chosen. String-type approximation shows excellent results for low part of frequency spectra, but for forced oscillations the corresponding mistake can be very big. So, the more appropriate CM should be found. We analyze three following models: the intermediate CM are obtained by replacing the difference operator (DO) for the derivative operator of the order 2k, k > 1; the quasi-CM are more accurate approximations of the DO via Pade approximates (PA); the two-point PA give the most precise results. Possibilities of the approach generalization and application are discusseДокумент Взаимодействие упругих волн с цилиндрической полостью в условиях плоской деформации(НТУ "ХПИ", 2005) Назаренко, А. М.; Панченко, Б. Е.; Ложкин, А. М.The problem of elastic waves diffraction on a cylindrical space is dealt with. The problem is brought to solving singular equations, which are calculated numerically. Dependence of the space boundary voltage on dynamic, mechanical and geometrical characteristics are presentedДокумент До оптимального проектування коліс рухомого складу залізниць при технологічних та експлуатаційних навантаженнях(НТУ "ХПІ", 2005) Резниченко, М. К.; Щепкін, Олександр ВіталійовичThe systematic numerical research of railroad car wheel were made using technological heating by induction-heating devices which allowed the establishment of the laws of the stress-strain state of the wheel set elements, during its thermal assemblyДокумент Интегральные характеристики напряженно-деформированного состояния корпусов транспортных средств специального назначения(НТУ "ХПИ", 2005) Пелешко, Евгений ВитальевичThe analysis procedure development problem and the synthesis solution problem of different types of special-purpose vehicle hulls is solved. The specialized integrated system scheme of the analysis and a synthesis of hulls, and also integrated performances of strength and stiffness is offeredДокумент Исключение влияния переменных режимов работы турбоагрегатов на процесс диагностирования комплексным методом(НТУ "ХПИ", 2005) Божко, А. Е.; Белых, В. И.; Зализняк, О. А.The necessity of the complex analysis of fluctuations of basic and persistent bearings and control of the moments of change of speed the circulation of a rotor turbo-machines is shown at vibrating diagnostics. The monitoring system of change of speed the circulation of a rotor for application it is indicated at temporary selection of a vibrating signalДокумент К вопросу о деформировании корпусов транспортных средств при действии ударных нагрузок(НТУ "ХПИ", 2005) Васильев, Антон ЮрьевичA theoretical method to research of transport vehicles under the percussion action is offered. The methods of force-equivalent loading is described. Lagrange Formulation, Euler Formulation, Arbitrary Lagrangian-Euleran Formulation and method of Fluid-Structure Interaction is described too. Possibility of applying these methods to analyzing frame of transport vehicles are givenДокумент К вопросу об изменении жесткости прямых эвольвентных зубьев модифицированных в виде круговых канавок на торцах колеса(НТУ "ХПИ", 2005) Кириченко, А. Ф.; Бережной, Виталий АлександровичThe increasing way of spur gears capacity to work are studied. Gear tooth calculation of volumetric stress strain state of modification spur gears by method of finite element is performed. The stress and rigidity calculation results of modification spur gears with by circle sharpening on spur gears have been calculatedДокумент К вопросу расчетно-экспериментального исследования напряженно-деформированного состояния элементов сложных механических систем(НТУ "ХПИ", 2005) Ткачук, Николай Анатольевич; Орлов, Е. А.; Липовецкий, Л. С.; Макалей, А. Н.Development of calculation-experimental method for research of stressed-deformed state of elements of complicated mechanical systems is presented. The charts of researches with application of method of finite elements and speckle-holographic interferometry are describedДокумент К задаче формирования расчетных схем элементов технологических систем листовой штамповки(НТУ "ХПИ", 2005) Гоголь, Н. А.; Назарова, О. В.; Ткачук, Анна Владимировна; Кохановская, Ольга ВладиславовнаThe general structure of specialized system for analysis of the stressed-deformed state of elements of stamps is presented. The stressed-deformed state of puncheons, moulds and puncheon-mould is investigatedДокумент К исследованию контактных напряжений при изгибе двухслойных пластин из стеклопластика с межфазными дефектами структуры(НТУ "ХПИ", 2005) Верещака, Сергей МихайловичOn the basis of the geometric nonlinear discrete-structural theory of multy-layer plates and shells the intense-deformed status of anisotropic elements with defects in structure of material is investigated. At the conclusion of the equations of balance and geometrical parity the influence of deformations of cross shift and cross-pressure is taken into account. The results of theoretical researches are compared with experimental dataДокумент Лазерная диагностика потоков. Часть 2. Параметры элементов оптических схем ЛДИС(НТУ "ХПИ", 2005) Никитин, А. М.In this article estimations of the optical parameters schemes LDA adapted to measuring of stream performances of restricted transparency fluids are reduced. Efficiency of algorithm at a phase of layout LDA optical schemes is showДокумент Моделирование свойств материалов биомеханических систем: модели, подходы, численный эксперимент(НТУ "ХПИ", 2005) Веретельник, Юрий ВикторовичThis article is devoted to some mechanical research aspects of vertebra body stressedly-deformed state. The specified models are built vertebra bodies, which can be used for further researches. The quality and quantitative influencing analysis of the elasticity modulus and anisotropy is conducted on the vertebra behaviourДокумент Напряженно-деформированное состояние составных осесимметричных конструкций, собираемых с натягом при использовании нагрева(НТУ "ХПИ", 2005) Андреев, Арнольд Георгиевич; Резниченко, Н. К.The created simulation model is intended for a research of assembly, ensures execution technological and strength of the requirements to a construction. The numerical results are indicatedДокумент Нелинейное деформирование бронированного шланга(НТУ "ХПИ", 2005) Мисюра, Е. Ю.This paper is concerned with the study of the stress-strain state of the armoured hose loaded by the internal pressure. The hose is a piecewise-homogenous isotropic thick-wall cylinder formed by two layers-rubber (inner) and metallic (external) ones. The statically axisymmetric problem of the plane deformed state in the physically and geometrically nonlinear formulation was solved by means of the finite element method on the base of the principle of possible displacements in the increments. The obtained numerical results made it possible to test the methodics and the program elaborated early and also to reveal the influence of the braid on the strength of the hoseДокумент Нелинейные изгибно-продольные колебания вращающихся стержней(НТУ "ХПИ", 2005) Ширяева, Наталья Владимировна; Аврамов, К. В.Nonlinear axial-bending vibrations of rotating beams are investigated here. Eiler-Bernuly hypothesis are used for modeling of a beam. Beam's vibrations are represented in the form of line of natural frequencies nonrotating beam. Ordinary differential equations of nonlinear vibrations are obtained hereДокумент Обратная задача баллистики свободной гидравлической струи(НТУ "ХПИ", 2005) Ольшанский, В. П.; Мищенко, И. В.; Ольшанский, Станислав ВасильевичThe conditions of the expiration of a stationary jet are determined, at which its trajectory passed through the given point of a vertical plane under a direct angle to it, and the particles of a liquid in this point have the given speed of movementДокумент Определение показателей надежности чувствительного элемента датчика давления - цилиндрического резонатора(НТУ "ХПИ", 2005) Повгородний, В. О.The article devoted to problems of definition parametrical reliability and probable operability. The work develops a new approach in mechanics and reliability based on evaluation of parametrical reliability (namely, reliability coefficients) and operability of structural elements, simple two dimensional structures (for example, boards with radio components) as well as complex three-dimensional lamellar-bar and cylindrical structuresДокумент Особенности деформации металлов в сильных магнитных полях(НТУ "ХПИ", 2005) Автономова, Людмила Владимировна; Степук, Александр ВладимировичDeformation mechanisms in pulse high magnetic fields are considered in the researching. The basic conclusions are as follows: non-uniformity of metals' deformation resulted on thermal effects of skin heating; raising of plasticity limit from surface to the sample depth up to its dynamic value; zero magnetic field pressure on surface does not prevent the metal structural modificationsДокумент Применение марковских моделей для расчета остаточного ресурса при усталостных отказах(НТУ "ХПИ", 2005) Жовдак, В. А.; Тарасова, Л. Ф.The approach of the construction element's residual resource prediction, based on the use of kinetic equations for description of the measure of damage and the mathematical tool for Markoffs process theory is proposed. As the result, the most informative reliability characteristics, such as no-failure operation probability and probability density of failures, are determined. This approach allows take proper account of the random loading, fatigue point decrease