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Information × Registration Number 0225U002574, (0120U104906) , R & D reports Title Durability and thermoelectromechanical behavior of inelastic structural elements with piezoelectric sensors and actuators under forced vibrations popup.stage_title Дослідження довговічності непружних елементів конструкцій з п’єзоелектричними сенсорами та актуаторами з врахуванням впливу температури дисипативного розігріву при вимушених коливаннях Head Karnaukhov Vasyl H., Доктор фізико-математичних наук Registration Date 19-03-2025 Organization S.P. Tymoshenka Institute of Mechanics of the National Academy of Sciences of Ukraine popup.description1 Development of new mathematical models and numerical-analytical methods for studying the durability and thermoelectromechanical behavior of inelastic spatial and thin-walled structural elements with piezoelectric sensors and actuators under forced vibrations, taking into account the dependence of material properties on temperature, geometric and physical nonlinearities; analysis of the obtained results and development of recommendations for increasing the durability of inelastic elements with piezoelectric sensors and actuators. popup.description2  Based on the developed numerical techniques, the nonlinear problem of axisymmetric oscillations and vibroheating of a flexible cylindrical shell with piezoelectric actuators with hinged ends was investigated, and on the permissible value of the maximum temperature of vibration heating the durability of the system over time at extreme values of load amplitudes and heat transfer parameters was stydied; the nonlinear thermoelectromechanical behavior and durability of viscoelastic layered piezoelectric three-dimensional structural elements (cylindrical and conical panels) were investigated, taking into account dissipative heating and temperature dependence of electromechanical properties of materials under mechanical and electrical loads; the thermal degradation of viscoelastic structural elements was assessed taking into account stress concentration; using the example of a multilayer body of revolution of a complex meridional section, geometric and modal stress concentration were studied as mechanisms for localization of the vibroheating temperature; numerical and analytical methods for solving problems of calculating the cyclic durability of structural elements of modern technology under conditions of complex stress states, which are based on the concept of equivalent stresses, have been developed and experimentally tested. Product Description popup.authors Zhuk Yaroslav O. Zinchuk Liubov P. Kaminska Olena A. Karnaukhov Vasyl H. Kasperska Valentyna V. Kyrychok Ivan F. Kozlov Volodymyr I. Leliukh Yurii I. Ovsinska Tetiana A. Pohrebniak Anatolii D. Romanov Oleksandr V. Sapsay Kateryna P. Selivanov Mykhailo F. Senchenkov Ihor K. Fernati Pavlo V. Chervinko Olha P. Yakovenko Nina D. Yarovynskyi Yurii Ya. popup.nrat_date 2025-03-19 Close