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Information × Registration Number 0225U002676, (0120U101346) , R & D reports Title Development of a methodology for calculating the strength and durability of modern power plants and aircraft-rocket technology under enhanced thermal power and dynamic loads popup.stage_title Розвиток методології розрахунку міцності і довговічності сучасних енергетичних установок та авіаційно-ракетної техніки при посилених термосилових і динамічних навантаженнях Head Smetankina Nataliia V., Доктор технічних наук Registration Date 27-03-2025 Organization Anatolii Pidhornyi Institute of Power Machines and Systems of the National Academy of Sciences of Ukraine popup.description1 Development of methods, software, and computational studies of the stress-strained state, thermal strength, resource and vibrational state of the units of power machines and aircraft-rocket technology under conditions of enhanced thermal and dynamic loads popup.description2 New and improved existing calculation methods and software tools have been created, stress-strain state, thermal strength, service life and vibration state of units of power machines and aircraft-missile equipment under enhanced thermodynamic and dynamic loads have been evaluated. Scientific novelty of the proposed developments is provided by the use of modern models and numerical methods, problem statements and methods of their solution. A calculation method and software for the study of stress-strain state of structures in three-dimensional formulation under impulse and shock loading taking into account plastic deformations and material heterogeneity have been developed. Modeling of structural elements failure under impulse and shock loading, evaluation and generalization of the obtained results are carried out. The methodology of dynamic analysis of rocket structures with heterogeneous composite elements with arbitrary orientation of anisotropy axes and taking into account delamination to assess their danger is created. The methodological and software is applied to study the influence of various delamination’s of the structure of composite fairing elements. The most dangerous types of delamination, at which redistribution and growth of dynamic stresses are maximum, are determined. On the basis of modern methods of deformable solid mechanics with the use of theories of multilayer structures, methods of analyzing the stress-strain state of composite structural elements under static and dynamic loads, assessing the strength of aviation gas turbine engines during collision with birds and cyclic-symmetric metal structures under the influence of operational loads have been developed. The obtained results correspond to the level of modern research and have an important practical value, confirm the operability of the developed calculation methods and software and can be successfully used for designing new and assessing the strength of existing structures operating un Product Description popup.authors popup.nrat_date 2025-03-27 Close