Browsing Выпуск 23 by Submit Date
Now showing items 21-40 of 48
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Устойчивость тонких гофрированных оболочек, лежащих на упругом основании, под действием неоднородного гидростатического давления
(БНТУ, 2008)The problem of stability of the thin-walled corrugated shell laying on the elastic foundation under action of non- uniform pressure is considered. The influence of the elastic foundation is taken into account as the additional pressure within the framework of Winkler's model. The rigid clamped conditions are considered at the edges of the shell. The obtained resolving equation ...2019-11-15 -
Компьютерный анализ напряженно-деформированного состояния ортодонтического аппарата
(БНТУ, 2008)In the present paper results of modeling and calculation strain - deformed conditions of the orthodontic device with four crowns, executed in a finite - element package Ansys and Ansys Workbench are submitted.2019-11-15 -
Влияние многосуставных мышц на целенаправленное движение человека
(БНТУ, 2008)The equations ofpurposeful movement of the person who is carrying out exercises on sports shells, possessing elastic properties in the working part, are deduced without taking into account functionalities of muscular system of the person. Actually, the realization of the physical dependences which described by models of movement and have been not reflected in the equations, depends ...2019-11-15 -
Численное моделирование механического поведения наноструктуры графена, содержащей разрез
(БНТУ, 2008)The mathematical model of graphen nanostructure containing a cut is constructed and realized in package Mathematica. Dependences of forces arising in valence bonds at loading and Young modulus from length of defect are investigated. It is shown, that at edge of a cut forces grow in some times. Young modulus decreases almost in two.2019-11-15 -
Statistical-mechanical description of orientational order tensor fluctuation by means of Fokker-Planck equation
(БНТУ, 2008)This article is devoted to derivation the evolution equation for the distribution function offluctuations of tensor order parameter on bases ofsolving of the Liouville equation by Zubarev method.2019-11-15 -
Методы дискретизации и гомогенизации в динамических задачах сложных механических систем
(БНТУ, 2008)Чигарев, А. В. Методы дискретизации и гомогенизации в динамических задачах сложных механических систем / А. В. Чигарев, Д. Н. Миронов, Э. Каминский // Теоретическая и прикладная механика : межведомственный сборник научно-методических статей / Белорусский национальный технический университет ; редкол.: А. В. Чигарев (пред. редкол.). – Минск : БНТУ, 2008. – Вып. 23. – С. 167-173.2019-11-15 -
Компоновочные схемы для моделирования трансмиссионных зубчатых механизмов
(БНТУ, 2008)While modeling transmission, two main types of models are used: a kinematic scheme and a CAD assembly. Both types have their own advantages and disadvantages as well. The kinematic scheme is flat and it doesn't contain special data to calculate loads. The CAD assembly - quite the contrary — is too detailed and it is rather hard to create this kind of model. This paper presents ...2019-11-15 -
Тестер экспресс оценки прочности клеевых соединений
(БНТУ, 2008)The article deals with the results of work in designing a tester for making express evaluation of the adhesive joints strength. The working out of design and technology documentation of tester has been conducted by means of the computer-aided design programmer COMP AS 3D. The creation of the solid three-dimensional model allowed to mod- elize all stages of the process of the ...2019-11-15 -
Математическое моделирование одного класса задач теории оболочек
(БНТУ, 2008)The general methods of the resolution of the partial differential equations of the first order for a prescribed of the strain state of thin-walled elastic shells of the given type (momentless or pure moment) are obtained.2019-11-15 -
К вопросу об определении износа во вращательных кинематических парах рычажных механизмов
(БНТУ, 2008)It is necessary to construct hodographs of reactions for estimation of distribution of wearing in elements of turning kinematic pairs. However if both parts of pairs are mobile, the real picture of expected wearing can be received, having presented reaction in mobile systems of the coordinates connected with corresponding parts. The features of definition of reactions in mobile ...2019-11-15 -
Равнительный численный анализ механического поведения нанотрубки в случае применения разных механических моделей
(БНТУ, 2008)It was developed computer model of single-walled carbon nanotube on basis of valence-force-field approach. One performed computational experiments to determine mechanical characteristics (linear elasticity modulus, crosscut compression coefficient, shear modulus) according nanotube dimensions. One realized comparison present results with results obtained within Urey-Bradley model. ...2019-11-15 -
Комплексное моделирование электромеханических систем на примере офсетной печатной машины
(БНТУ, 2008)This paper is devoted to the building of complex modeling environment on the basis of SolidWorks, Visual- Nastran and Matlab/Simulink packages. Possibility of creation of such an environment is demonstrated on the example of model offset printing machine with the printing cylinder angular velocity stabilization system. Connection and exchange information between the mechanical ...2019-11-15 -
Пьезоэлектрический сенсор интеллектуальной системы контроля шухмоподобным сигналом
(БНТУ, 2008)Modes of electroacoustic and acoustoelectric converting of random signals by piezoelectric sensor as a flat piezoelement are studied/. The wave equation for distribution of mechanical shift along the thickness of the given element, taking into account the acoustic voltage (vibration radiation mode) and the controlled mechanical shift (reception mode) are presented in a form ...2019-11-15 -
Сравнительный анализ динамичсеких реакций основания двух типов лесопильных рам
(БНТУ, 2008)Log frames of two types (with a central slider-crank mechanism and translation motion of the saw frame and with a non-central slider-crank mechanism and plane motion of the saw frame) are considered. The analytical expressions for kinematic characteristics are deduced. The dynamic forces on the log frame basements are calculated and compared with each other. Calculations are ...2019-11-15 -
Концепция разработки информационных учебных пособий при изучении теоретической механики в УО «ВГТУ»
(БНТУ, 2008)Conception of creating information manuals at study of the theoretical mechanics. Are given an estimation and recommendations for use machine and without machine programmed of the control of knowledge of the students, the conditions are stated which should answer process of mastering and quality of preparation at independent work of the students.2019-11-15 -
Методическое обобщение стержневой модели шероховатости в курсе «Контактные задачи и трибология»
(БНТУ, 2008)А methodical generalization of а rod model of roughness was made in the paper.2019-11-15 -
Кинематика зубчатых передач с некруглыми колесами
(БНТУ, 2008)В работе рассмотрена кинематика двух типов зубчатых передач с эллиптическими колесами. Получены формулы для угловой скорости и углового ускорения ведомого колеса, на основании которых построены графики зависимости указанных угловых характеристик от угла поворота ведущего колеса, вращающегося с постоянной угловой скоростью.2019-11-15 -
Моделирование динамического поведения жесткопластической криволинейной пластины с произвольным свободным отверстием
(БНТУ, 2008)А rigid, perfectly-plastic model of solids is applied to study the dynamic behavior of simply supported or clamped, arbitrarily shaped plates with an internal, free, arbitrarily shaped hole. Governing equations for dynamic behavior are obtained. Operating conditions of possible mechanisms of deformation are analyzed. Analytical expressions for the ultimate loads are obtained.2019-11-15 -
Обучение Internet-технологиям в курсе «Информатика»
(БНТУ, 2008)The given article is devoted to features of training the Internet-technologies in discipline "Informatics". Authors have created the electronic simulator applied in laboratory works. The fragment of the electronic instruction is shown.2019-11-15 -
Алгоритмы анализа и предотвращения коллизий при движении трех планарных позиционеров на одном статоре
(БНТУ, 2008)The motion program building approach the goal of which is collateral control of several actuators bringing the affix the desired dynamical and accuracy properties, should be implemented in the way to avoid actuators collisions. The algorithm which enables this is described in the paper. It is based on a geometrical representation of actuators movement and takes into consideration ...2019-11-15