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Information × Registration Number 0225U001484, (0124U000328) , R & D reports Title Experimental and numerical researches of the processes of destruction and survivability of shell structures with damage under extreme static, local shock and thermal loads. popup.stage_title Розробка методики та експериментальні дослідження впливу отворів (пробоїн) на руйнування оболонок. Head Dziuba Anatoli P., Доктор технічних наук Registration Date 01-02-2025 Organization Oles Honchar Dnipro National University popup.description1 The purpose of the work is obtaining new mechanical effects and deepening knowledge about the processes of destruction and loss of load-bearing capacity of power elements of modern technology and biomechanics by conducting systematic large-scale experimental studies of the behavior of shell, lamellar, continuous deformable bodies under the action of extreme static, local shock and thermal loads, and on this basis the construction new approaches to the development of both means of destruction and methods of ensuring the strength and reliability of power structural elements. popup.description2  A methodology for conducting experimental studies of the influence the holes (shell-hole) arising under the action of local impact loading on the destruction of preloaded cylindrical shell models has been developed. A device for throwing solid bodies has been developed. A test complex has been created to study the bearing capacity of models of thin-walled structures for the reliability of surface damage under the action of local impact load by foreign mass and (or) debris fragments, which allows determining the characteristics of the impact process depending on the shape, mass, speed and number of bodies being thrown. The results of computer modeling of the process of punching the surface of cylindrical shells with a hard ball at different speeds and at different angles to the shell surface are presented. The forms of loss of stability and the dependence of the critical force on the total area of circular holes (shell-holes) of different sizes and numbers randomly accumulated on the lateral surface of cylindrical shells are presented. The results of experimental studies of the process of crack formation, further development of the stress-strain state and fracture of plate models in the vicinity of stress concentrators in the form of a crack tip are presented. The results are presented in the form of patterns of loss of stability, fractures and distribution of critical stresses. Product Description popup.authors Dziuba Anatolii P. Dreus Andrii Yu. Levytina Larysa D Patsiuk Anatolii H. Pylypenko Oleksandr H. Stepanenko Valerii F. Shevelova Alla Ye. popup.nrat_date 2025-02-01 Close