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Comparative analysis of the shaped-charge jet formation
16
Engineering Journal: Science and Innovation
# 1·2018
Comparative analysis of the shaped-charge jet formation
from conical and hemispherical liners
© S.V. Fedorov, S.V. Ladov, Ya.M. Nikolskaya
Bauman Moscow State Technical University, Moscow, 105005, Russia
The article describes numerical simulation of the metal shaped-charge jet formation dur-
ing compression of conical and hemispherical liners carried out within the framework of
the two-dimensional axisymmetric problem of continuum mechanics. Copper was consid-
ered as a material for liners. It is found that the transition from a constant thickness of
hemispherical shaped liners to a degressive one (decreasing from the top to the bottom)
makes it possible increasing the velocity of the head part of the formed shaped-charge
jets to a level of 10 km / s provided by shaped charges with conical lining. It can be made
by creating conditions for the realization of the implosion principle (spherically symmet-
rical thinning-down of the liner material to the center). The analysis of mass-velocity
distributions for shaped-charge jets, formed from different liners, has been performed.
Findings of the research show that using liners of a degressive thickness in the form of a
half-ellipsoid or a truncated sphere is possible as an additional means of controlling the
mass-velocity characteristics of the shaped-charge jets.
Keywords:
shaped charge, shaped-charge jet, conical liner, hemispherical liner, mass-
velocity distribution, numerical simulation
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