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Документ Автоматизация пьезооптических измерений(НТУ "ХПИ", 2006) Тесленко, А. А.In simulation methods work being presented, the photoelasticity method accuracy is investigated for methods used under measurements automation. Besides, the method application limitations related to the investigated product orientation accuracy evaluation are shownДокумент Алгоритм чисельної оптимізації конструкцій з урахуванням обмеженнь за допомогою R-функцій(НТУ "ХПІ", 2006) Грищенко, Володимир Миколайович; Галаган, Ю. М.The algorithm of the decision of a problem of optimum designing of designs which prominent feature is the way of the account of restrictions inequalities is offered. With this purpose properties of R-functions are usedДокумент Анализ расчетных методов оценки работоспособности элементов автомобильных шин(НТУ "ХПИ", 2006) Ларин, А. Н.; Коханенко, В. Б.; Конохов, Владимир Иванович; Школьный, С. М.Decided of problems of fatigue and type of failure for tires there are large complex in connections of many aspects. The contemporary systems of finite element analysis allow to obtained of solutions for the several moments of this total problemДокумент Анализ чувствительности конструкций при воздействии физических полей различной природы(НТУ "ХПИ", 2006) Назаренко, Сергей АлександровичCoupled-field analyses are useful for solving problems where the coupled interaction of phenomena from various disciplines of physical science is significant. There are basically two methods of coupling distinguished by the finite element formulation techniques used to develop the matrix equations. Complicated finite-element models with high geometric and physical self-descriptiveness sensitivity analysis methods are given in this article. The developed mathematical apparatus application domains are examinedПублікація Аналіз міцності розмежувальної стінки камери виводу пучків заряджених частинок з прискорювача в атмосферу(НТУ "ХПІ", 2006) Бірюков, О. В.; Ковпік, О. В.; Корнілов, Є. О.; Саєнко, С. Ю.; Морачковський, Олег Костянтинович; Замула, Олексій ОлександровичIn article strength-stress state of the boundary wall of the chamber of outlet electronic and proton beams from the accelerator in an atmosphere is considered. The method of the solution is constructed on the basis of finite element method. Influence on strength of a geometrical configuration of a wall, and also a combined effect temperature and load is exploredДокумент Выбор допускаемых напряжений в условиях абразивного изнашивания(НТУ "ХПИ", 2006) Приймаков, А. Г.; Устиненко, Александр ВитальевичThe criteria estimation of comparative endurance of materials is given in view of structural adaptation to conditions of a working environment. The level of an anisotropy and complexity of a structural condition of surfaces of abrasive chafing, with the help of the Fourier-assaying is quantitatively estimated. It is shown how to realize a choice of supposed stress at presence of an abrasive in a friction zoneДокумент Вынужденные колебания трубопроводов гидросистемы копрового пресса(НТУ "ХПИ", 2006) Астахова, К. В.; Жовдак, В. А.; Татьков, В. В.; Трубаев, Александр Иванович; Федоренко, И. М.On the basis of a finite element method the numerical researches of forced and free vibrations and strength of the pipeline of a hydraulic-circuit system were under an operation of transient shocks are held. The estimation of influence of internal pressure on a spectrum of natural frequencies and stress state of a system is given. The dynamic responses of internal pressure are defined experimentallyДокумент Зарождение и развитие Харьковской школы теории управления(НТУ "ХПИ", 2006) Бреславский, Дмитрий Васильевич; Горелова, Светлана Александровна; Ларин, Андрей АлексеевичThe paper is devoted to the genesis of Control Theory from first papers of Maxwell, Vyshnegradsky and Stodola. The contribution of Kharkiv engineers and scientists and the development of this Theory in control systems in power engineering and spacecraft technique are suggestedДокумент Исследование вибрационных характеристик опорной конструкции длинного валопровода(НТУ "ХПИ", 2006) Красников, Сергей ВасильевичThe problems, related with creation of test bed for lengthy rotor-system are considered. On the basis of the eigentones analysis of a several versions of a rotor-base system guidelines on a construction of the test bed are made. The mathematical models and calculations are executed on the basis of finite elements methodДокумент Исследование влияния механических характеристик материала на характер деформирования рабочих колес центробежных компрессоров(НТУ "ХПИ", 2006) Бухолдин, Ю. С.; Левашов, В. А.; Львов, Геннадий Иванович; Костромицкая, Ольга АнатольевнаThe influence of a yield stress value on character of elastoplastic deformation and elastic unloading of the working wheel under inertial loading is investigated. The realization of the large number of calculation variants by a of finite-element method shows, that there is a so-called critical value of a yield stress. It is not recommended to use materials having a yield stress lower of this critical value, for making of working wheels of centrifugal compressors, as it will result in redistribution of a deforming picture, appearance of the large bending moments and displacements, which after unloading do not disappearДокумент Исследование закритического поведения ортотропных пологих оболочек сложной формы в плане(НТУ "ХПИ", 2006) Курпа, Лидия Васильевна; Любицкая, Екатерина ИгоревнаGeometrically nonlinear behavior of orthotopic shallow shells subjected to the transverse load is investigated. The method of linearization of nonlinear equations and finding of upper and lower critical load, which is based on the combination of variational methods and R-function theory, is proposed. The algorithm is applied to solve problems of orthotopic spherical shallow shells with complex plan form. Test results of isotropic case are compared with those available in the literatureДокумент Исследование термоупругости металло-керамического нагревательного элемента(НТУ "ХПИ", 2006) Повгородний, В. О.; Займак, С. В.In this article the determine of the geometrical inverse problem of thermoelasticity. This problem is determined by the finite element method. This problem is determined to the electrical hearts elementsДокумент Крутильные колебания стержня, вызванные движущейся нагрузкой(НТУ "ХПИ", 2006) Шаповалов, А. В.; Шатохин, Владимир МихайловичPeculiarities of rod torsion oscillations under the influence of equal regularly located on circumference force system are investigated. Force lines of action are perpendicular to circumference plane and rod axle. Points of their application evenly move on stated circumference. Criteria of resonance lack and conditions of polyresonance beginnings are receivedДокумент Математическое и компьютерное моделирование в гидродинамических сложнополостных системах(НТУ "ХПИ", 2006) Суворова, И. Г.; Холобцев, С. С.The mathematic model current of the tough incompressible fluid and her computer realization in POLE system allowed making the numerical research into hydrodynamics canals with compound profile building by R-function method. Qualitative pictures currents are received. The influence of Reinolds number (Re) is valuedДокумент Моделирование большой берцовой кости и численный анализ влияния фронтальной деформации на ее напряженное состояние(НТУ "ХПИ", 2006) Бреславский, Дмитрий Васильевич; Конкин, Валерий Николаевич; Сукиасов, Владимир Георгиевич; Пустовойт, Б. А.; Баха, В. Ф. ЯхьяThe problem of the tibia static analysis under action of physiological loading is considered. The comparison of stress state of the healthy and curved bones is carried out by finite element computation of three-dimensional models. It is shown, that presence of face-to-face deformation results in significant increase of bones loading levelДокумент О влиянии кинематических гипотез на характер контактного взаимодействия цилиндрической оболочки с бандажом(НТУ "ХПИ", 2006) Львов, Геннадий Иванович; Ткачук, А. Н.The article is devoted to research of contact interaction between thin cylindrical shell and rigid bandage. All possible types of contact interaction and lengths of contact zones are obtained for different shell parameters and shell formulations. The obtained results are given by means of diagrams on parameter planeДокумент О влиянии управляющих воздействий на динамические нагрузки и параметры поворота гусеничной машины с гидрообъемной передачей(НТУ "ХПИ", 2006) Зайцев, Александр Иванович; Шатохин, Владимир МихайловичModel of caterpillar machine turning, which permits to investigate dynamic processes in engine, transmission with differential mechanisms and hydrovolumetric transmission, running gear as a single whole system, are developed. It takes into account elasticity of connective shaft, road characteristics, object rate of movement, number of transmission, washer of regulable machine control. Results of dynamic processes design-experiment investigations are citedДокумент Один вариант уравнений устойчивости оболочек слоистой структуры с межфазными дефектами(НТУ "ХПИ", 2006) Верещака, Сергей МихайловичOn the basis of the discrete-structural theory of thin shells the variant of the equations of stability of settlement model of multy-layer thin-walled elements with several rigid anisotropic layers is offered. It is considered, that the pressure of cross shift and pressure on border of contact are equal among themselves. It is supposed elastic slipping on a surface of contact of adjacent layers. The permitting equations of stability are received with the account of nonlinear deformations and deformations of cross shift and pressureДокумент Определение областей динамической неустойчивости для пластин сложной геометрии(НТУ "ХПИ", 2006) Мазур, Ольга СергеевнаThe method of construction of dynamic instability region for plates with complex form is offered. The proposed approach is based on application R-function method and variational one. New numerical results for plates with complex form are obtainedДокумент Оптимізація нагріву при роз'єднанні деталей(НТУ "ХПІ", 2006) Андрєєв, Арнольд Георгійович; Резниченко, М. К.; Щепкін, Олександр ВіталійовичOn example of heating the vehicle gear when putting it on the axis the opportunities of charge energy optimization are shown. The optimization was conducted with restrictions on pressure and temperatures. The dependence of charge of energy from properties of material is shown. The improved simplex method by J.A. Nelder and R.Mead is applied