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Information × Registration Number 0225U003699, (0122U202076) , R & D reports Title Mechanics of prestressed bodies and nonlinearly elastic shell structures members of non-circular cross-section popup.stage_title Розробка основ акустопружності для ультразвукового неруйнівного методу визначення напружень в квазіізотропних матеріалах і в приповерхневих шарах масивних конструкційних елементів. Head Huz Oleksandr M., д.т.н. Registration Date 03-08-2025 Organization Institute of Mechanics. S.P. Tymoshenko of the National Academy of Sciences of Ukraine popup.description1 Study of the stress-strain state of materials and bodies with initial stresses and thin-walled members of non-circular cross-section structures under the action of static and dynamic loads, including: problems formulation; development of linear and non-linear theories; development of methods, algorithms, programs; solving specific classes of problems for prestressed bodies and thin-walled members of cylindrical structures with oval and elliptical cross sections; analysis of the obtained results and identification of regularities of static and dynamic processes in these bodies and structural members. popup.description2 Within the framework of the three-dimensional linearized theory, the main acousto-elasticity relations for the ultrasonic non-destructive method for determining uniaxial, biaxial, and triaxial stresses in quasi-isotropic materials (for example, taking into account rolling) and in near-surface layers of massive structural elements were obtained. Using the nonlinear theory of elasticity and Murnaghan's elastic potential, which depends on three algebraic invariants of the Green's strain tensor, the values of the phase velocities of longitudinal, transverse, and surface Rayleigh waves have been determined for relatively stiff (metals, alloys) compressible elastic bodies, and their dependences on the initial stresses have been established. Product Description popup.authors ABROSOV Yurii Yu. Babych Stepan Yu. Bahno Oleksandr M. Bohdanov Viacheslav L. Hlukhov Yurii P. Zhuk Oleksandr P. Korniienko Viktoriia F. Lysenko Anna V. Maksymiuk Volodymyr A. Maksymiuk Nina V. Storozhuk Yevhen A. Chernyshenko Ivan S. Shchuruk Halyna I. popup.nrat_date 2025-08-03 Close