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Information × Registration Number 0211U001901, 0110U002281 , R & D reports Title Theory and methods of research of elastic systems dynamic behavior under external loading of stochastic and shock nature popup.stage_title Head Bazhenov Viktor, Registration Date 28-02-2011 Organization Scientific - research complex of the Kyiv National University of Construction & Architecture popup.description2 The mathematical tools for the potential method analysis of structures' massive elements two-dimensional stationary vibrations is developed. Two approaches for construction of hypersingular boundary integral equations which describe dynamic stress fields inside and on the boundary of the elastic two-dimensional bodies with cracks are proposed and investigated. Properties of integral equation kernels near the integration pole are determined. It is shown that both approaches yield reliable results and can be effectively used in a wide range of vibration frequencies. The comparative analysis of ways for modeling of shock interaction in vibroimpact systems of different types - with hard and soft limiting stops is carried out. It is recommended to model shock loading with nonlinear force of contact interaction and to describe it with Hertz' law in vibroimpact systems with vibration limiting stops of any type. The theoretical base for modification method of continuation on a parameter is developed for vibroimpact system with a shock damper model for a case of impact modeling with contact interaction force. The method is applied to construction of loading curve. The list of the operations necessary for such construction is given. The level of structional safety of cylindrical shell with real imperfections of forms were determined. On the basis of Bolotin's probabilistic approach and research methods for stability of imperfect shells and prognostication of risk of their accidents the expected value of reliability level, actual level of risk of accidents and safe resource of petroleum reservoir with real imperfections of forms which arose up after ten year exploitation of object were determined. Product Description popup.authors Бубенчикова В.Г. Ворона Юрій Володимирович Геращенко Олег Валерійович Гоцуляк Євген Олександрович Дехтярюк Євген Семенович Костіна Олена Володимірівна Лук'янченко Ольга Олексіївна Погорелова Ольга Семенівна Постнікова Тетяна Георгіївна Русанова О.В. popup.nrat_date 2020-04-02 Close