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Journal of Applied Mechanics and Technical Physics

2015 year, number 6

OSCILLATIONS OF A CYLINDRICAL BODY SUBMERGED IN A FLUID WITH ICE COVER

L. A. Tkacheva
Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
tkacheva@hydro.nsc.ru
Keywords: поверхностные волны, изгибно-гравитационные волны, колебания погруженного цилиндра, резонансные частоты, присоединенные массы, коэффициенты демпфирования, метод Винера -- Хопфа, surface waves, flexural-gravity waves, oscillations of submerged cylinder, resonant frequencies, added masses, damping coefficients, Wiener-Hopf method

Abstract

The linear plane problem of oscillations of an elliptic cylinder in an ideal incompressible fluid of finite depth in the presence of an ice cover of finite length is solved. The ice cover is modeled by an elastic plate of constant thickness. The hydrodynamic loads acting on the body are determined as functions of the oscillation frequency and the positions of the cylinder and plate.