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Information × Registration Number 0225U001541, (0122U001709) , R & D reports Title Theory and methods of research of nonisothermal physically nonlinear deformation of spatial bodies of rotation taking into account dynamic loading popup.stage_title Дослідження впливу динамічних навантажень на перебіг процесів фізично-нелінійного деформування просторових тіл обертання Head Maksymiuk Yurii V., Доктор технічних наук Registration Date 02-02-2025 Organization Kyiv National University of Construction and Architecture popup.description1 Development of theoretical bases and new methods of numerical research of long physically nonlinear deformation of spatial bodies of rotation taking into account additional dynamic influences. Tasks to be solved by the project: 1- creation of methods for construction of discrete calculation models of NMSE for bodies of rotation on the basis of the moment scheme of finite elements; 2- development of algorithms for modeling long-term physically nonlinear deformation of spatial bodies of rotation taking into account transient additional dynamic influences; 3- analysis of convergence and reliability of results based on the solution of control examples, covering all processes and objects under consideration; analysis of the limits of effective use of the proposed algorithms; 4- solving practical problems to determine the quantitative indicators of the impact of taking into account the dynamic components of the load on the value of the resource. popup.description2 During the final stage of the work, complex applied problems were solved using effective computational algorithms for modeling the processes of physically nonlinear deformation, taking into account dynamic loading based on the semi-analytical finite element method (SFEM). An analysis of the stationary oscillations of a reservoir for receiving and storing palm stearin under wind load was performed. The stress-strain state (SSS) of an underground tunnel under the influence of a train moving at a constant speed was studied. The impact of partial stiffness loss of a monolithic cooling tower of a nuclear power plant () on its natural modes and frequencies was investigated. An analysis of the SSS of a NPP cooling tower under dynamic "tornado" loading was conducted. Additionally, the SSS of the reactor containment of a NPP under intense internal pressure was analyzed. The results confirmed the efficiency of the developed approaches in calculating spatial bodies of complex shapes using the semi-analytical finite element method. Product Description popup.authors Lukianchenko Olha O. Maksymiuk Yurii V. Mitsyuk Serhii V Pyskunov Serhii O. Solodei Ivan I. Stryhun Ruslan L. Shkryl Oleksii O. popup.nrat_date 2025-02-02 Close