Вісник № 12 том 1
Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2565
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Документ Оптимизация лопатки рабочего колеса турбокомпрессора по критерию собственной частоты колебаний(НТУ "ХПИ", 2003) Жовдак, В. А.; Иглин, Сергей Петрович; Смирнова, Л. М.; Солошенко, В. А.The optimization problem for blade of the turbocompressor for internal combustion engine boosting turbine wheel is solved. The objective function is the first natural frequency, variable parameters are blade thicknesses in FEM-grid nodes. 2D shell model of blade with triange finite element is used. We use the modification of the quazi-Newton optimization method with BFGS-formula, cube approximation in the 1D search and sliding along boundless. Numerical results are presentedДокумент Случайные колебания рам тележек вагонов метрополитена с учетом неровности пути(НТУ "ХПИ", 2003) Белоцерковский, Александр Борисович; Жовдак, В. А.; Черных, О. В.; Ярошок, Ю. А.The problem of definition of probability performances of the bogie frames of transit vehicles at random action is considered. The random action is caused by track irregularities. The external load is modelled by the stationary random process. The calculation is executed by the finite element method and the method of spectral representations. The program system COSMOS/M was used. The mode deformation of the system was investigated at the different models of the loading