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Information × Registration Number 0222U003607, 0118U100532 , R & D reports Title Development of a new generation of mathematical models, calculation algorithms and computer programs for expert analysis of the stress-strain state, strength and robustness of the responsible welded structural elements of energy objects, aerospace engineering and trunk transport popup.stage_title Head Makhnenko Oleg V., Доктор технічних наук Registration Date 07-05-2022 Organization E.O.Paton Elektric Welding Institute National Academy of scinces of Ukraine popup.description2  The object of research is the physical and mechanical processes during the installation and operation of welded large-sized structures. The purpose of the work is the creation of universal methods and tools for numerical prediction of the stress-strain and limit state of large-sized welded critical structures, their performance and residual life. The idea of ​​research is to develop numerical and numerical-experimental methods for assessing the strength and performance of large-sized welded critical structures based on modern concepts of complex interrelated physical processes that determine the resistance of a material to various types of destruction. Research methods - mathematical modeling and computer simulation of the kinetics of temperature fields, stresses, deformations, subcritical damage, phase state of the metal of typical large-sized structural elements during their installation and subsequent operation. Within the framework of scientific and research work, mathematical models and high-performance computer programs were developed for predicting the kinetics of temperature fields and the stress-strain, damaged and structural states of typical large-sized structures. Implemented methods for assessing the bearing capacity and resource of structural elements, the criteria for their limiting state to ensure quality, reliability and performance. Practical recommendations are formulated for predicting the boundary state of large-sized launch vehicles with a wafer wall structure. Separate results of the work were used in the framework of cooperation with Yuzhnoye Design Bureau. Product Description popup.authors Basystyuk Nazar R Velikovanenko Olena А. Vorona Gregory V Kandala Stepan M Kostenevich Olena S. Milenin Oleksii S. Makhnenko Oleksiy O Muzhychenko Olexander F Tuesday Nina I Prudkiy Igor I Raisin Galina P Savitskaya Olena M Saprykin Galina Yu Tsarinny Olexey B popup.nrat_date 2022-05-07 Close