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Information × Registration Number 0219U100945, 0118U100196 , R & D reports Title Development of the scientific basis for damage diagnosis of turbomachinery blades with parameters of their nonlinear vibrations popup.stage_title Head Savchenko Kyrylo V., Кандидат технічних наук Registration Date 05-04-2019 Organization G.S. Pisarenko Institute for Problems of Strength of the National Academy of Sciences of Ukraine popup.description2  R&D report: 26 pages, 8 pictures, 40 references Blade, forced vibrations, breathing fatigue crack, fe model, sub- and supergarmonic resonance, vibrodiagnostic parameters The object of the study is the forced vibrations of the elastic bodies with a breathing fatigue crack. The purpose of the work is the creation of the three-dimensional finite element models of blade airfoil to determine the vibration characteristics of the presence of local damages. Methods of research - three-dimensional finite element modeling of the blade airfoil, taking into account its design features, boundary conditions and loads, processing and analysis of the results. The analysis of causes of blade damages and known methods of their modeling is carried out. A three-dimensional finite element modeling of the blade airfoil with the local damage, taking into account the parameters of vibration excitation and energy dissipation, has been carried out. The models can be used to determine the influence of the breathing fatigue crack on the formation of forced vibrations of the blade airfoil and vibrodiagnostic parameters of its presence. Product Description popup.authors popup.nrat_date 2020-04-02 Close