In this paper we present possibilities of increasing the depth of penetration through a steel plate by using segmented kinetic energy penetrators. Conclusions about the possibilities of increasing the penetration depth were formulated based on the critical review of the literature, simulations, and firing test results. A new concept called “forced segmented penetration,” where applied penetrator is composed of two tungsten alloy pieces connected by a screwed steel muff, is presented in this paper. The axial deformation of the connecting muff during the penetration process results in a decrease in the distance between tungsten segments. For this reason the rear segment can hit the front segment to give it some additional kinetic energy, enhancing the penetration depth. Such type of segmented penetration phenomena was not presented earlier. The numerical analyses of the segmented penetrator of the new design are presented in this paper.

Issue Section:
Terminal Ballistics
Keywords:
ballistics, military vehicles, projectiles, weapons, terminal ballistic, penetration, segmented penetrator, steel armor
Topics:
Kinetic energy, Projectiles, Steel, Tungsten, Firing, Numerical analysis, Guns, Armor, Tungsten alloys, Simulation, Deformation, Design, Weapons
1.
Włodarczyk
,
E.
,
Głodowski
,
Z.
, and
Michałowski
,
M.
, 2002, “
Penetration of the Undeformable Projectile Into Metallic Half-Space
,” Bulletin WAT, LI, No. 10, pp.
33
–
45
.
2.
Orphal
,
D. L.
, and
Franzen
,
R. R.
, 1990, “
Penetration Mechanics and Performance of Segmented Rods Against Metal Targets
,”
Int. J. Impact Eng.
0734-743X,
10
, pp.
427
–
438
.
Crossref
Search ADS
 
3.
Holt
,
C. H.
,
Reaugh
,
J. E.
,
Kusubov
,
A. S.
,
Cunningham
,
B. J.
, and
Clive
,
C. F.
, 1990, “
Extending Projectiles: First Annual Report on Work in Progress
,” Lawrence Livermore National Laboratory, Report No. UCRL-ID-103353.
4.
Franzen
,
R. R.
, and
Schneidewind
,
P. N.
, 1989, “
Observations Concerning the Penetration Mechanics of Tubular and Helical Hypervelocity Penetrators
,”
Proceedings of the 1989 Hypervelocity Impact Symposium
, San Antonio, TX, Dec. 4, Paper No. DARPA-TIO-90-02.
5.
Isbell
,
W. M.
,
Mensa
,
T. L.
, and
Pace
,
C. D.
, 1995, “
The GRC Telescopic Crossrod Penetrator: A New Design for the Defeat of Advanced Armors
,” General Research Corporation Company Proprietary White Paper.
6.
Weinacht
,
P.
, and
Ferry
,
E. N.
, Jr., 1992, “
Aerodynamic Predictions for Extending Projectile Designs
,” U.S. Army Ballistic Research Laboratory, Aberdeen Proving Ground, MD, Report No. BRL-TR-3350.
7.
Farrand
,
T. G.
, 1995, “
A Model-Scale Terminal Ballistic Evaluation of a Kinetic Energy Rod and Tube Penetrator
,” U.S. Army Research Laboratory, Aberdeen Proving Ground, MD, Report No. ARL-TR-697.
8.
Lo
,
E. Y.
,
Legner
,
H. H.
,
Miller
,
M. G.
, and
Reinecke
,
W. G.
, 1996, “
Extending Projectile Pitch Control
,”
Proceedings of the 16th International Symposium on Ballistics
, San Francisco, CA, Sept. 23–28.
9.
Lynch
,
N. J.
,
Subramanian
,
R.
,
Brissenden
,
C.
, and
Shears
,
P.
, 1995, “
Terminal Ballistic Performance of Novel KE Penetrators
,”
Proceedings of the 15th International Symposium on Ballistics
, Jerusalem, Israel, May 21–24.
10.
Magness
,
L. S.
, and
Frank
,
K. A.
, 1993, “
Split-Rod Projectile Concept
,”
Proceedings of the 1993 Workshop on Kinetic Energy Penetrator Concepts
, Aberdeen Proving Ground, MD.
11.
Kucher
,
V.
, 1981, “
Multiple Impacts on Monolithic Steel
,”
Proceedings of the Sixth International Symposium on Ballistics
, Orlando, FL, Oct. 28.
12.
Strobel
,
E. L.
, 1991, “
Review of DARPA Segmented Rod Development Efforts
,” Interfeometrics, Inc. Document No. 91228.
13.
Bjerke
,
T. W.
,
Zukas
,
J. A.
, and
Kimsey
,
K. D.
, 1992, “
Penetration Performance of Disk Shaped Penetrators
,”
Int. J. Impact Eng.
0734-743X,
12
(
2
), pp.
263
–
280
.
Crossref
Search ADS
 
14.
Frank
,
K.
, and
Zook
,
J.
, 1990, “
Chunky Metal Penetrators Act Like Constant Mass Penetrators
,”
Proceedings of the 12th International Symposium on Ballistics
, San Antonio, TX.
15.
Anderson
,
C. E.
,
Subramanian
,
R.
, Jr.,
Walker
,
J. D.
,
Normandia
,
M. J.
, and
Sharron
,
T. R.
, 1997, “
Penetration Mechanics of Seg-Tel Penetrators
,”
Int. J. Impact Eng.
0734-743X,
20
, pp.
13
–
26
.
Crossref
Search ADS
 
16.
Bélanger
,
É.
, and
Gosselin
,
P.
, 2005,
Engineering Development Analysis of Segmented Projectile Discarding Sabot
,
Defence R&D Canada
,
Valcartier, Quebec
.
17.
De Rosset
,
W. S.
, and
Sherrick
,
T.
, 1996, “
Segmented Rod Performance at Ordnance Velocity
,” U.S. Army Research Laboratory, Aberdeen Proving Ground, MD, Report No. ARL-MR-291.
18.
Magier
,
M.
, 2007, “
The Calculations Methods of the Penetration Depth of the Kinetic Energy Projectiles
,” Bulletin WITU (in Polish), MIAT, Vol.
101
, pp.
103
–
116
.
19.
Jach
,
K.
, and
Włodarczyk
,
E.
, 1986, “
Numerical Simulation of Multidimensional Cumulation and Driving Problems of Deformable Bodies
,”
J. Tech. Phys.
0324-8313,
27
, pp.
1
–
2
.
20.
Jach
,
K.
, 1987, “
Numerical Modelling of Two-Dimensional Elastic/Visco-Plastic Deformation of Materials at Dynamic Loads
,”
Proceedings of the 11th AIRAPT International Conference
, Kiev, Ukraine, Jul. 12–17.
21.
Jach
,
K.
, 1987,
Numerical Modeling Phenomena of Classical and Inverse Cumulation
(in Russian),
PMTF
,
Moscow
, Vol.
2
.
22.
Jach
,
K.
,
Leliwa-Kopystynski
,
J.
,
Mroczkowski
,
M.
,
Świerczyński
,
R.
, and
Wolański
,
P.
, 1994, “
Free Particle Modeling of Hypervelocity Asteroid Collisions With the Earth
,”
Planet. Space Sci.
0032-0633,
42
(
12
), pp.
1123
–
1137
.
Crossref
Search ADS
 
23.
Jach
,
K.
,
Świerczyński
,
R.
, and
Wilk
,
Z.
, 2004, “
Modelling of Perforation Process of Well Bore Pipes of Geological Wells Using Shaped Charges
,”
J. Tech. Phys.
0324-8313,
45
(
1
), pp.
31
–
54
.
24.
Jach
,
K.
,
Morka
,
A.
,
Mroczkowski
,
M.
,
Panowicz
,
R.
,
Sarzynski
,
A.
,
Stȩpniewicz
,
K.
,
Świerczyński
,
R.
, and
Tyl
,
J.
, 2001,
Computer Modelling of the Bodies Dynamic Interactions by Method of Free Particles
(in Polish),
PWN
,
Warsaw, Poland
.
25.
Jach
,
K.
, 1990,
Numerical Simulations of the Shaped Charges
(in Polish),
WAT
,
Warsaw, Poland
.
26.
Jach
,
K.
,
Morka
,
A.
,
Mroczkowski
,
M.
,
Panowicz
,
R.
,
Sarzynski
,
A.
,
Stȩpniewicz
,
K.
,
Świerczyński
,
R.
, and
Tyl
,
J.
, 2002,
Computer Modelling of Dynamic Interactions Between Bodies Using Free Particles Method
(in Polish),
PWN
,
Warsaw, Poland
.
27.
Kaliski
,
S.
,
Rymarz
,
C. Z.
,
Sobczyk
,
K.
, and
Włodarczyk
,
E.
, 1992,
Waves
,
PWN
,
Warsaw, Poland
.
28.
Nowacki
,
W. K.
, 1974,
The Waves Issues for Plasticity Theory
(in Polish),
PWN
,
Warsaw, Poland
.
29.
Perzyna
,
P.
, 1966,
Viscoplastic Theory
,
PWN
,
Warsaw, Poland
.
30.
Wilkins
,
M. L.
, 1984, “
Modelling the Behaviour of Materials
,”
Structural Impact and Crashworthiness
, Proc. Intern. Conf., London, Vol.
2
.
31.
Steinberg
,
D. J.
,
Cochran
,
S. G.
, and
Guinan
,
M. W.
, 1980, “
A Constitutive Model for Metals Applicable at High-Strain Rate
,”
J. Appl. Phys.
0021-8979,
51
, pp.
1498
–
1504
.
Crossref
Search ADS
 
32.
Steinberg
,
D. J.
, and
Lund
,
C. M.
, 1989, “
A Constitutive Model for Strain Rates From 104 to 106 s−1
,”
J. Appl. Phys.
0021-8979,
65
, pp.
1528
–
1533
.
Crossref
Search ADS
 
33.
Agurejkin
,
V. A.
,
Anisimov
,
S. I.
,
Busman
,
A. V.
,
Kanel
,
G. I.
,
Karjagin
,
V. P.
,
Konstantinov
,
A. B.
,
Krjukov
,
B. P.
,
Minin
,
V. F.
,
Razorenov
,
S. V.
,
Sagdeev
,
R. Z.
,
Sugak
,
S. G.
, and
Fortov
,
V. E.
, 1984, “
Teplofiziceskie i gazodinamiceskie problemy protivometeoritnoj zascity kosmiceskogo apparata “Vega”
,”
Teplofiz. Vys. Temp.
0040-3644,
22
(
5
), pp.
9
–
64
.
34.
Kanel
,
G. I.
, and
Fortov
,
V. E.
, 1987, “
Mechanical Properties of Condensed Media Under Intense Impulse Actions
,”
Uspekhi Mekhaniki
0137-3722,
10
(
3
), pp.
3
–
82
, in Russian.
35.
Sugak
,
S. G.
,
Kanel
,
G. I.
,
Fortov
,
V. E.
,
Ni
,
A. L.
, and
Stelmah
,
B. G.
, 1983, “
Numerical Modeling of the Action of an Explosion on an Iron Slab
,”
Combust., Explos. Shock Waves
0010-5082,
19
(
2
), pp.
239
–
246
.
Crossref
Search ADS
 
36.
Holmquist
,
T. J.
, and
Johnson
,
G. R.
, 1991, “
Determination of Constants and Comparison of Results for Various Constitutive Models
,”
J. Phys. III
1155-4320,
1
, pp.
853
–
860
.
37.
Church
,
P. D.
, and
Cullis
,
I.
, 1991, “
Development and Application of High Strain Rate Constitutive Models in Hydrocodes
,”
J. Phys. III
1155-4320,
1
, pp.
917
–
922
.
38.
Goldthorpe
,
B. D.
, 1991, “
Constitutive Equations for Annealed and Explosively Shocked Iron for Application to High Strain Rates and Large Strains
,”
J. Phys. III
1155-4320,
1
, pp.
829
–
835
.
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