Влияние сжимаемости снаряжения на параметры его состояния при проникании ударника в бетонную преграду

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С.В. Федоров, В.А. Велданов, А.Ю. Перфильев, А.С. Смирнов
38 ISSN 0236-3941. Вестник МГТУ им. Н.Э. Баумана. Сер. Машиностроение. 2017. № 5
Смирнов Александр Сергеевич — д-р техн. наук, начальник отдела АО «ГосНИИмаш
им. В.В. Бахирева» (Российская Федерация, 606002, Нижегородская обл., г. Дзержинск,
проспект Свердлова, д. 11а).
Просьба ссылаться на эту статью следующим образом:
Федоров С.В., Велданов В.А., Перфильев А.Ю., Смирнов А.С. Влияние сжимаемости сна-
ряжения на параметры его состояния при проникании ударника в бетонную преграду //
Вестник МГТУ им. Н.Э. Баумана. Сер. Машиностроение. 2017. № 5. С. 28–40.
DOI: 10.18698/0236-3941-2017-5-28-40
EFFECT OF FILLING COMPRESSIBILITY ON THE VARIABLES OF STATE
DURING PROJECTILE PENETRATION INTO A CONCRETE TARGET
S.V. Fedorov1
V.A. Veldanov1
A.Yu. Perfil'ev2
A.S. Smirnov2
1 Bauman Moscow State Technical University, Moscow, Russian Federation
2 JSC Bakhirev Institute of Mechanical Engineering, Dzerzhinsk, Nizhegorodskaya obl.,
Russian Federation
Abstract Keywords
The article presents the results of a numerical analysis
investigating how the compressibility of a 126 mm dia-
meter projectile affects its loading parameters in response
to the g-force the projectile is subjected to as it penetrates
a concrete target at an initial velocity of 1000 m/s. We
performed our numerical simulation in the framework of
a two-dimensional axisymmetric continuum mechanics
problem, representing the filling as a compressible elas-
toplastic medium. We investigated three alternative
filling models that have the same density under normal
conditions but considerably different compressibility
properties, which we describe using a barotropic Tait
equation. The state variables we determined included
longitudinal stresses in various regions of the filling, its
rear surface velocity and axial displacement. We found
that as the projectile decelerates in the concrete target,
the fluctuations in these parameters are of the nature of
damped oscillations, the amplitude-by-time characteris-
tics of which depend substantially on the filling com-
pressibility
Penetration, concrete target, g-force,
projectile filling, dynamic compressi-
bility, numerical simulation
REFERENCES
[1] Selivanov V.V., ed. Sredstva porazheniya i boepripasy [Weapons and ammunition]. Mos-
cow, Bauman MSTU Publ., 2008. 984 p.