Drgania sprężysto lepkoplastycznej powłoki kulistej

Oscillations of a complete thin elastoviscoplastic spherical shell is analysed in the range of small strains. The shell is subjected to a radial pressure impulse of rectangular shape or to several impulses. The magnitude of the initial impulse is determined resulting in the yielding of the shell. The influence of the viscosity of the material upon the basic parameters of vibrations is investigated. Also, the influence is considered of the instant of application of the second impulse and of the cyclic loading on the magnitude of deflections.