elastic-viscous beam, explosion in water, destruction of the beam structure.

An analytical solution is given to the problem of guaranteed destruction of the beam by the explosion of a charge of a condensed explosive substance (BB) in water. It is assumed that the beam material is sensitive to the rate of deformation, the criterion of failure is used for maximum normal stresses equivalent to the maximum bending moment during bending. The arbitrary location of the explosive charge above the beam, the effects of the reflection of the shock wave and the satellite flow of water from the beam, the depth of immersion of the structure and the charge into the water are taken into account. A significant influence of the value of the viscosity coefficient of the beam material on the value of the explosive charge required for its guaranteed destruction was found.

Volodin Gennady Timofeevich, Doctor of Technical Sciences, Professor, Tula State University, Tula, Russia.

Kochergin Denis Sergeevich, postgraduate student, Tula State University, Tula, Russia.