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Документ Уточнение математической модели ротора на ЭМП за счет определения магнитной проводимости зазоров под полюсами с учетом взаимовлияния смещений в радиальном и осевом направлениях(НТУ "ХПИ", 2006) Мартыненко, Геннадий ЮрьевичIn work the mathematical model of a rotor on magnetic bracket with inclusion in it of the specified nonlinear expressions for permeances of gaps of radial and axial electromagnetic bearing is examined. The example of calculation of permeances of gaps by the offered way and by means of the simplified expressions is describedДокумент Эффективная методика анализа динамических систем с нелинейным демпфированием(НТУ "ХПИ", 2006) Филипковский, С. В.The airplanes aggregates elastic-damped suspensions are reviewed. The efficiency of computational methods of transient analysis of suspensions at an operation on them of short-lived and sudden loads is investigated. Accuracy, convergence and expenses of a machining time in Runge-Kutta, Newmark and Wilson methods are determined . The modifications of Newmark and Wilson methods for calculation of non-linear systems are offered. The calculations of suspensions with constructional dispersion of energy and dry friction are executed. A designed technique and the programs are intended for optimal designing of suspensionДокумент 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 Топологически регулярные конечно-элементные сетки для тел с кинематически генерируемыми поверхностями(НТУ "ХПИ", 2006) Ткачук, Николай НиколаевичIn the paper a technology of topological regular finite element models generation for bodies with complicated geometry is proposed. It enables to achieve parameterized finite element models within the framework of researched objects' geometry synthesis procedure and can be implemented in CAE softwareДокумент 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 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 Структурно-механические свойства и морфология биокерамики(НТУ "ХПИ", 2006) Степук, А. А.; Степук, Александр Владимирович; Автономова, Людмила ВладимировнаThe Calcium Hydroxyapatite (HAp), which physical and chemical properties are similar to bone tissue, is applied in various medicine areas as ceramics, cements and composite implants. It is exposed that thermo treatment leads to crystallites form and structure modification. It is examined the crystallites morphology, that influence to structural and mechanical HAp propertiesДокумент 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 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 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 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 examinedДокумент 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 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 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 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 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 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 Свободные вращения абсолютно твердого цилиндра с учетом вязкого трения(НТУ "ХПИ", 2006) Гладков, С. В.; Науменко, К. В.Free rotations of rigid cylinder with viscous friction were considered in the article. It was given analytical solution for vector of right angular velocity and numerical solution for position vector using Runge-Kutta 4-5th order method in Maple. Analytical and numerical solutions were compared and it was shown high accuracy of numerical methodic, which was the result of using of rotation vector rather then rotation tensor or Euler's arcsДокумент 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 disappear