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Information × Registration Number 0301U000299, 0199U002034 , R & D reports Title Development of theoretical basis and analysis of static and dynamic response processes of nonlinear systems subjected to various deterministic and stochastic power fields popup.stage_title Розробка методів дослідження динамічної поведінки просторових дискретних моделей під дією сейсмічних навантажень. Розвиток методів розв'язання задач оптимального проектування дефоpмівних просторових систем при стаціонарних та динамічних навантаженнях. Застосування різних варіантів ефективних схем методу статистичних випробувань для дослідження надійності складних систем. Розробка методів дослідження регулярних та хаотичних коливань дефоpмівних систем при стохастичному навантаженні Head Bazhenov V. A., Registration Date 09-02-2001 Organization Kiev National University of bildiny and tecture popup.description2 During performance HИР the settlement ratio of semianalitical method of final elements for the decision of tasks on the free and compelled fluctuations of non-uniform and homogeneous bodies of rotation with the account previously of intense condition of a body from static loadings were received which allow to build settlement model completely reflecting structure of a real design, properties of a material taking into account presence of apertures and ledges, it is natural to form boundary conditions; to define the intense condition of a body and numerically to simulate dynamic deforming of complex designs in various operational and extreme modes of operations at simultaneous action of static and dynamic loadings. Are created and the models of dynamic loadings of natural character, such as seismic, wind such as tornado, having complex spatial distribution and requiring account in dynamic spatial statement are investigated. The process dynamic deforming under tornado is investigated. Is offered, is advanced and the new variant of a formulation of the theory in increasing for strongly nonlinear tasks of the mechanics of a firm deformable body with use of the modified approach of Lagrange is realized, when all members of the maximum order of a strongly deformable current condition are taken into account. The basic ratio modified momentary of the circuit of final elements with use of the connected basic functions of space are developed. The special algorithms of the decision of systems of the nonlinear equations of balance of the large order for certainly element models facilitated shape designs are developed. The questions connected to development of a technique reducting of dynamic models on the basis of vectors Lanzosha and application of reduced models for numerical research of fluctuations of elastic systems at dynamic loading of a various nature are stated. The problems of application of the effective circuits of a method of statistical tests for the decision of a wide circle of tasks of reliability ofstructures are considered. The results of researches in a variable amplitude - phase of irregular fluctuations of flexible plates and environments are given at harmonic to loading. The task of distinction of own frequencies and frequencies of external loading with the help of application of functioncoherent of compound reaction of a plate under action of loading being sum of a broadband and narrow-band component with an identical spatial configuration is considered. The technique of research of stability and critical of behaviour of non-uniform environments is offered at thermopouer loadings. The questions of a numerical substantiation both study of convergence and accuracy of the decisions received with the help of a developed technique are stated. For environments is in steps - changed thickness the comparative analysis with the known nonlinear decisions of tasks of stability is executed. Is developed and the technique of modeling of temperature and power loadings is applied. The action complex simultaneousthermopour loadings on vectorially nonlinear stability of smooth and ridge environments is investigated. Product Description popup.authors popup.nrat_date 2020-04-02 Close