Дослідження напружено деформованого стану, коливань та оптимальне проектування несучих конструкцій гідротурбін

The thesis is devoted to solving scientific and technical problems, that consist in developing the models and methods for stress-strain state (SSS) investigation, determining the vibration characteristics and optimal design (OD) of hydro turbine covers, differed by the most comprehensive view of the design features and range of external influences in service. Based on the finite element method, a mathematical model of the cover was developed. The analysis of the SSS of the design of the cover of the turning-paddle hydro turbines is carried out. The optimal design of the hydraulic turbine cover is based on the gradient method. Are detected zones of concentration of maximum stresses. Numerical studies of the natural frequencies of the oscillations of the original construction of the cover of the hydroturbine and the reduced-weight structure have been performed.