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Information × Registration Number 0304U004044, 0102U000927 , 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 методів дослідження міцності, стійкості та позакритичної поведінки пружних та пластичних систем довільної конфігурації при статичному та динамічному (детерміністичному або стохастичному навантаженні) з урахуванням невизначених завчасно умов контактної взаємодії. Розробка методів оптимізації форми структури великопрольотних оболонкових комбінованих систем складної конфігурації при наявності спеціальних граничних умов. Розробка методів аналізу динамічної стійкості при стохастичному навантаженні. Програмна реалізація, тестування, визначення ефективності та достовірності розроблених алгоритмів. Head Bazhenov Victor Andriyovich, Registration Date 03-03-2004 Organization Kiev National University of bildiny and tecture popup.description2 The methods of construction of dynamic stability borders for continual deformed systems under parametric exponential-correlated excitation were developed. Stability of trivial solution stochastic analog of Mathieu-Hill equation was investigated under parametric white noise and exponential-correlated excitation which based on method of moments functions. Vibrations of pipeline systems were considered under concurrent environmental and parametric excitation.The combined algorithm of a numerical research of processes of nonlinear deformation, stability and supercritical behaviour of thin inhomogeneous shells which have a multiply material structure, a complicated shape and geometric singularities by a thickness, at an operation of static non-uniform temperature and force loads was developed. The responsible space elements of contemporary machine-building constructions and engineer structures as thin shells which has been under influence of the impulsive outward loadings of large capasity was considered.Methods and algoritms for solution of the tasks of geometrical non-linear dynamical deformations were devised. The universality mathematical and rated models based on using of the variation methods, moment's schems of the finit elements method and the Newmark's numerical method of analysis were created. The transients of dynamic deforming of inhomogeneous body of revolutions and prismatic bodies with allowance for of non-linear activity of a stuff was researched. The own forms and oscillation frequencies of inhomogeneous 3D frames was defined. The researches were realized by selection of methods of researches, construction of computational ratio SAFEM, mining of effective algorithms of the solution of large systems of linear and non-linear equations. Product Description popup.authors popup.nrat_date 2020-04-02 Close