The approach to investigate the impact interaction of a long cylindrical body and a cavitation cavity surface during a movement in compressible liquid is proposed. The nonstationary mixed initial-boundary problem with unknown boundaries moving with variable velocity is formulated. The solution is reduced to Volterra integral equations of the 2nd kind in conventional case. The velocity of body's penetration in the initial time interval is determined as a function of mass and initial conditions. It is estimated that, unlike the incompressible liquid case, the liquid reaction force accomplishes its maximal value in a trice and decays after it.

• Кубенко Веніамін Дмитрович (1938–) (фізико-математичні науки)

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