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Mechanism of explosive formation of high-velocity elongated projectiles…
Engineering Journal: Science and Innovation
# 12·2017 17
Mechanism of explosive formation of high-velocity
elongated projectiles from steel segment lining
© P.V. Kruglov, V.I. Kolpakov
Bauman Moscow State Technical University, Moscow, 105005, Russia
The study focuses on the results of mathematical simulation of the explosively formed
projectiles done with numerical methods of continuum mechanics. In this paper we con-
sider some options for improving the projectiles efficacy and describe the results of com-
putational experiments with various design parameters of the steel segment lining. Math-
ematical models of projectiles of two standard sizes were studied in two-dimensional and
three-dimensional formulations. Findings of the research show that the best characteris-
tics of the high-velocity elongated projectiles can be obtained by using the spherical-
conic lining and the lining with a developed chamfer. The models with different physical
and mechanical properties of the lining, in particular, demonstrate the mechanism of
projectile forming from the lining with radial gradient ductility. The study substantiates
the application of the elastoplastic deformation model and the failure criterion in the
form of the Smirnov—Alyaev criterion.
Keywords
: explosively formed projectiles, numerical simulation, high-velocity elongated
projectiles
REFERENCES
Kolpakov V.I.
Nauka i obrazovanie — Science and Education
, 2012, no. 2,
pp. 31. Available at:
http://old.technomag.edu.ru/doc/334177.html(accessed
December 10, 2016).
Kolpakov V.I., Bascacov V.D., Shikunov N.V.
Oboronnaya tekhnika —
Enginery
, 2010, no. 1–2. pp. 82–89.
Potapov I.V., Kolpakov V.I., Shikunov N.V., Yakimovich G.A. Matemati-
cheskoe modelirovanie vzrivnogo formirovaniya stalnykh porazhayuschykh
elementov [Mathematical modeling of explosive formation of steel projectiles].
Shock Waves in Condensed Matter: Int. Conference
. Saint-Petersburg – Novgo-
rod (Russia), 2010, pp. 184–188.
Kolpakov V.I. Osobennosti deformirovaniya i razrusheniya udlinennykh pora-
zhayuschykh elementov pri vzrivnom nagruzhenii kumulyativnykh oblitsovok
[Features of deformation and destruction of elongated projectiles during explo-
sive loading of shaped lining].
Trudy mezhdunar. konf. “XIII Kharitonovskie te-
maticheskie nauchnye chteniya. Ekstremalnye sostoyaniya veschestva. Deto-
natsiya. Udarnye volny” (Sarov, 14–18 marta 2011 g.)
[Proc. Int. Conf. "XIII
Kharitonov thematic scientific readings. Extreme states of matter. Detonation.
Shock Waves" (Sarov, March 14–18, 2011)]. Sarov, RFNC–VNIIEF
Publ.,
2012, pp. 532–536.
Kolpakov V.I. Analiz konstruktivnykh osobennostey zaryadov s nizkimi seg-
mentnymi kumulyativnymi oblitsovkami iz tantalovykh splavov [Analysis of
design features of charges with low segment shaped linings made of tantalum al-
loys].
Trudy mezhdunar. konf. “ХVII Kharitonovskie tematicheskie nauchnye
chteniya. Ekstremalnye sostoyaniya veschestva. Detonatsiya. Udarnye volny”.
(Sarov, 23–27 marta 2015 g.)
[Proc. Int. Conf. “XVII Kharitonov thematic sci-
entific readings. Extreme states of matter. Detonation. Shock Waves” (Sarov,
March 23–27, 2015)]. Sarov, RFNC–VNIIEF
Publ.,
2012, pp. 288–290.