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Information × Registration Number 0216U009042, 0116U006909 , R & D reports Title Development of research methods and algorithms strength and stability of thin-walled structures under dynamic loads popup.stage_title Head Volodymyr P. Shevchenko, Registration Date 04-10-2016 Organization Donetsk National University popup.description2 The problem of joint vibrations of annular membrane and an ideal incompressible liquid in a rigid coaxial cylindrical tank is considered. The heavy membrane is placed on the free surface of the liquid and fixed on the outer and inner contours. Frequency equation of coupled natural vibrations of annular membrane and a liquid is derived and investigated. The influence of G-load, tension and geometry of the membrane and depth of filling on the first natural frequency is measured. It is shown that buckling of equilibrium flatness of the membrane is possible only at negative accelerations and it happens for certain values of the scalar G-load. Critical values of tension and G-load are calculated with the help of the static and dynamic approaches. It is shown that they do not depend on the inertia of the membrane and the depth of filling, and that the static approach gives the values of critical tension and G-load with adequate accuracy for practical application. Numerical investigations are performed and analyzed for a wide range of parameters of the considered mechanical system. A number of mechanical effects in the hydroelasticity problem are obtained on the basis of analytical and numerical investigations. Product Description popup.authors Вєтров О.С. Джуха Ю.О. Кононов Ю.М. Проскуряков В.О. Федорчук О.О. popup.nrat_date 2020-04-02 Close