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Information × Registration Number 0303U001429, 0199U002034 , R & D reports Title Development of theoretical bases of a construction of federated systems of a computer research of strength and stability of the responsible space elements of modern buildings and machine-building constructions at static and dynamic loads. popup.stage_title Розробка теоретичних основ побудови інтегрованих систем копмютерного дослідження міцності, стійкості, позакритичної поведінки оболонок і масивних тіл складної форми і структури при геометрично та фізично нелінійному деформуванні під впливом статичного та динамічного навантаження, в тому числі стохастичної природи. Head Bazhenov Victor Andriyovich, Registration Date 04-03-2003 Organization Kiev National University of bildiny and tecture popup.description2 In the course of researches the theories and methods of mathematical analyses were created and the models of process nonlinear deforming shell and massive solid complex form and structure at static and dynamic loads, including stochastic load, were developed. The analyses of modern state of dynamical stability deforming systems under parametric load problem were executed. Special class of problems research of parametric resonance of pipelines cross vibration at random pulsation press of internal stream were formulated. The stability problem about moment functions was set. The two cases of stochastic load: white noise and load, which consist of determinate periodical and stochastic parts were researched. The theoretical bases of research process of nonlinear deforming of thin heterogeneous shells, which have multiple material structure, median surface composite shape and geometrical feature across thickness at static irregular thermoweight loads were executed. The single designed model, which working up on base of universal space isoparametric multiple finite element with multilinear shape functions and added removable parameters was proposed. The patent sight matrixes were executed and used for built geometrical nonlinear or linear equations MFE of problems of nonlinear deforming of heterogeneous shells at thermoweight loads. The methodology and structure scheme of the shell costructions high-speed process deforming at great capacity impulsive influence were developed. The mathematical modelling based on proposed mechanic model of shell's elastically plastic behaviour with deformation speed. The technique and it's numerical subsystem of the space constructions(solid of revolution and prismatic solid) periodical vibrations at arbitrary space oriented periodical loads were developed. The analysis of numerical results convergence under different distribution character of loads was carried out. Product Description popup.authors popup.nrat_date 2020-04-02 Close