Вісник № 21
Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2754
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Документ Исследование вынужденных колебаний двух лопаток с учетом контакта в межбандажном соединении(НТУ "ХПИ", 2006) Демуз, Я. Д.; Жовдак, В. А.; Степаненко, А. С.In the given work the task about forced vibrations of blades is considered in view of contact interaction in blade-to-blade connection. The algorithm of calculation of non-linear vibrations designed in view of contact interaction.Документ Упрощение модели ошибок инерциальной навигации при различных видах движения летательного аппарата(НТУ "ХПИ", 2006) Успенский, Валерий Борисович; Багмут, Иван АлександровичTo research observability of tool errors of sensitive elements strapdown inertial navigating system without simplification of initial model of errors of strapdown inertial navigating system it is practically impossible. At the same time there is an assumption, that at the certain maneuvers of the air flying device, corresponding errors of sensitive elements can be neglected and therefore will be possible to receive much more simple models of errors of strapdown inertial navigating system. Therefore represents practical interest to receive the simplified models of errors of strapdown inertial navigating system suitable for the subsequent analysis tool errors of sensitive elements observabilityДокумент Нелинейные свободные колебания закрученных вращающихся стержней(НТУ "ХПИ", 2006) Аврамов, К. В.; Ширяева, Наталья Владимировна; Ищук, Ю. А.; Розова, Людмила ВикторовнаThe system of three partial differential equations describing flexural-flexural-torsional vibrations of pretwisted beam is introduced in this paper. An assumption that the center of gravity and the shear center are in different points is used here. Nonlinear modal analysis is used for discretization of this system. Free nonlinear oscillations are investigated by Shaw-Pierre methodДокумент Влияние присоединенных масс на динамическую устойчивость цилиндрических оболочек в сверхзвуковом потоке(НТУ "ХПИ", 2006) Курилов, Е. А.The aeroelastic stability of simply supported cylindrical shell with localized masses in supersonic flow is investigated. The Donnell-Mushtari-Vlasov nonlinear shallow-shell theory is used to describe the shell dynamics. Linear piston theory is applied to describe the fluid-structure interaction. The system is discretized by the Bubnov-Galerkin procedure. The dumping effect is analyzedДокумент Длительная прочность диска турбины(НТУ "ХПИ", 2006) Морачковский, Олег Константинович; Соболь, Владимир НиколаевичThe problem statement and solution method of creep-damage lifetime prediction for the turbine disk are presented in the paper. The creep-damage calculation results for the disks with constant thickness and variable section are given in the various time moments. The influence analyses of the disk section form on the rupture time have been doneДокумент Кинематический и динамический анализ кулачкового механизма формовочного станка(НТУ "ХПИ", 2006) Андреев, Юрий Михайлович; Дружинин, Евгений Иванович; Митин, О. В.It is resulted a technique of research of kinematics and dynamics of devices with Cam mechanisms, on the basis of use of a complex of kinematic and dynamic calculations (KIDYM), which comprises system of analytical calculationsДокумент Исследование возможности снижения остаточных деформаций в технологической оснастке для закалки валов(НТУ "ХПИ", 2006) Мартыненко, Геннадий Юрьевич; Скрынька, Л. М.; Смирнов, М. М.; Пирогов, А. Д.In work the researches by definition of the barring opportunity of residual plastic accumulation deformations in technological equipment have been carried out which are used for shaft, rotors etc hardening. It is shown, that thermotensions are the reason of accumulation of residual deformations. The ways of the level thermotensions decreasing at the expense of application thermo-insulating materials have offeredДокумент К активному гашению колебаний упругих систем(НТУ "ХПИ", 2006) Галас, Олег Сергеевич; Аврамов, К. В.Method of the active damping of beam oscillations is proposed in this work. Essentially nonlinear absorber with the feedback is attached to the beam. Method of the harmonic balance is used to investigate the system with the active absorber. Analysis of system stability is performed. Amplitude-frequency characteristic of the beam and absorber is buildДокумент Исследование надежности приборного блока самолета по виброускорениям(НТУ "ХПИ", 2006) Повгородний, В. О.In this article are introduced number's index of the fail-safe including vibration accelerations, free frequences and thermal stresses. The problem is soluted by the finite element's method and method of the theory of throw outs. The results for the new device of aircraft, which introduce the pocket of plates with electronical radiotechnical elementsДокумент Приближенное определение нестационарного температурного поля в цилиндре конечной длины(НТУ "ХПИ", 2006) Пустовалов, Владимир Николаевич; Навроцкий, В. В.; Михайленко, Т. И.The approximate solution of non-steady thermal conductivity for the final dimension cylinder is resulted. The method of solution is related to transition in the axis-symmetryс differential solution to new variable as the overall integral value of temperature. Comparative computations of exact and approximate decisions testify to sufficient efficiency and convenience of method for practical computationsДокумент Аналіз деформацій і напружень ретчетінгу при багатоцикловому деформуванні залізничних рейок(НТУ "ХПІ", 2006) Бреславський, Дмитро Васильович; Морачковський, Олег Костянтинович; Татарінова, Оксана АндріївнаThe paper is devoted to the method for strain-stress state determination of railroad rails considering the cyclical character of train's influence. The calculations were performed for the rail, which considers as a beam on the elastic basement, by use of the constitutive equations had been suggested by the authors. The results of stress redistribution are presentedДокумент О творческом наследии Льва Израилевича Штейнвольфа - ученого и педагога(НТУ "ХПИ", 2006) Ларин, Андрей АлексеевичIn article the career of the known scientist from KhPI - professors Shtejnvolf L.I. is submitted. It is devoted to the 90-anniversary from birthdayДокумент Собственные колебания оболочек вращения, частично заполненных жидкостью(НТУ "ХПИ", 2006) Гнитько, В. И.; Еселева, Е. В.The computational method for fluid shell interaction eigenproblems is proposed. Natural modes of the shell under fluid interaction are evaluated as superposition of its elastic natural modes. The methods of boundary and finite elements are applied for hydroelastic problem. As an interaction example, a hemispherical shell filled with fluid is demonstratedДокумент Динамические характеристики систем с поворотной симметрией при нерегулярной вариации параметров(НТУ "ХПИ", 2006) Симсон, Эдуард Альфредович; Назаренко, Сергей Александрович; Белозеров, А. В.Complicated finite-element models of cyclic symmetry structure with high geometric and physical self-descriptiveness sensitivity analysis and optimization methods are given in this article. Тю methods have guiding to orientate on high dimensions of state and design variables. Computation stages of constructions gradients functional derivation are investigated. Тю developed mathematical apparatus application domains are examinedДокумент Моделирование процессов накопления повреждаемости в тонких пластинах при действии ударных нагрузок(НТУ "ХПИ", 2006) Онищенко, А. В.The paper is devoted to the investigation of damage accumulation in thin plate with constant thickness, which is under impact loading. The single impact is presented in the one cycle. The linear damage summation is considered. The impact problem on the each cycle is solved by numerical-iterative method: the impact force value was found by use of finite difference scheme, the deformed plate state was determined analytically by shear Timoshenko's theory. The numerical examples are givenДокумент Расчет термонапряженного состояния многослойных пластин неканонической формы в плане(НТУ "ХПИ", 2006) Сметанкина, Н. В.; Свет, Е. В.; Шупиков, А. Н.A method for solution of a stationary termoelasticity problem of multilayer plates of non-canonical plan form which contour formed by straight lines and arches of circles is offered. Thermal loadings are obtained as result of solution of multilayer plate heat conduction problem. Thermal stresses in a five-layer plate are analyzedДокумент Устойчивость нелинейных форм вынужденных колебаний в дискретной системе с кубической нелинейностью(НТУ "ХПИ", 2006) Бреславский, И. Д.; Аврамов, К. В.The nonlinear normal modes of the system with cubic nonlinearity are studied. The variation equations are used to study stabilityДокумент Исследование динамики автомобиля методом нормальньіх форм с учетом нелинейньіх характеристик пружин подвески(НТУ "ХПИ", 2006) Михлин, Юрий Владимирович; Митрохин, С. Г.Free damped oscillations in the automobile with a nonlinear response of the suspension are considered. The 7-DOF nonlinear model is considered. As a result, nonlinear vibration modes and the corresponding skeleton curves are obtained. The transient is described in this system. The obtained results are compared with solutions of the corresponding linearized systemДокумент Напряженное состояние цилиндров слоистой структуры с межфазными дефектами(НТУ "ХПИ", 2006) Верещака, Сергей Михайлович; Жигилий, Д. А.On the basis of the discrete-structural theory of the thin shells the variant of the settlement model of multy-layer thin-walled elements from several rigid anisotropic layers is offered. It is considered, that the voltage of cross shift and pressure on the border of contact are equal among themselves. Elastic slipping is admitted on a surface of contact of adjacent layers. The decision of the task is got in vectorially nonlinear production with account of deformations' influence of cross shift and pressure. The status of two-layer transversally isotropic cylindrical shells with interphasal defects of material's structure is investigated. The results of the theoretical researches are compared to experimental dataДокумент Рациональный выбор конструктивных параметров межлопаточных связей(НТУ "ХПИ", 2006) Воробьев, Юрий Сергеевич; Гошкодеря, В. П.; Цыба, А. Н.The dependence of different oscillation mode frequencies on the position of one blade link is investigated. Investigation is carried out in the interactive mode. The package of programs is distinguished by sufficient completeness of data, straightforward servicing, and high speed. The technique allows for effective offsetting from resonance regimes and ensure minimal efficiency loss when installing blade links