Penetration characteristics of jacketed rods into semi-infinite steel targets

TANG Kui; WANG Jinxiang; CHEN Xingwang; LI Yuanbo; PENG Chucai

doi:10.11883/bzycj-2019-0323

Volume 40 Issue 5

May 2020

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2020 > 40(5): 053302

TANG Kui, WANG Jinxiang, CHEN Xingwang, LI Yuanbo, PENG Chucai. Penetration characteristics of jacketed rods into semi-infinite steel targets[J]. Explosion And Shock Waves, 2020, 40(5): 053302. doi: 10.11883/bzycj-2019-0323

Citation:

TANG Kui, WANG Jinxiang, CHEN Xingwang, LI Yuanbo, PENG Chucai. Penetration characteristics of jacketed rods into semi-infinite steel targets[J]. Explosion And Shock Waves, 2020, 40(5): 053302. doi: 10.11883/bzycj-2019-0323

Citation:

PDF( 11456 KB)

Penetration characteristics of jacketed rods into semi-infinite steel targets

doi: 10.11883/bzycj-2019-0323

1.
National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
College of Civil Engineering & Architecture, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China

Received Date: 2019-08-23
Rev Recd Date: 2019-11-22

Available Online: 2020-03-25

Publish Date: 2020-05-01

Abstract

Abstract

To found out the damage mechanism, penetration performance, and the effect factors on the penetration performance of the jacketed rod, two kinds of jacketed rods are penetrated into the semi-infinite 4340 steel targets with striking velocities in the range of 0.9−3.3 km/s experimentally and numerically. Based on the experimental and numerical results, it was found that both homogeneous tungsten alloy rod and jacketed rods presents typical hydrodynamic penetration characteristics under hypervelocity (>2.0 km/s) penetration. While the homogeneous tungsten alloy rod formed a “mushroom head” and the jacketed rods presented typical “co-erosion” damage mode during penetration process under low and medium striking velocity (0.9−1.8 km/s) conditions. Specially, the failure mode of the 1060Al/93W jacketed rod changed from the initial “bi-erosion” to the later “co-erosion”, while the striking velocity equals to 936 m/s. In the experimental speed range, the penetration performance of the jacketed rod is lower than that of the homogeneous tungsten alloy rod at low and medium striking velocities, and the penetration performance of the two is basically the same under hypervelocity conditions. However, the penetration performance of the jacketed rod is significantly better than that of the homogeneous tungsten alloy rod when the initial striking kinetic energy is the same. Compared to density, strength of the jacket has a more significant effect on the penetration performance of the jacketed rod, and the smaller the strength of the jacket material, the better the penetration performance is. According to the above analysis, it can be concluded that for a fixed ratio of the jacket radius to the core radius, it is preferred to use a jacket material with a lower density and a moderate strength.
- jacketed rod,
- semi-infinite target,
- damage mechanism,
- penetration performance

FullText(HTML)

References(12)

References

[1]	ERNST H J, LANZ W, WOLF T. Penetration comparison of L/D=20 and 30 mono-block penetrators with L/D=40 jacketed penetrators in different target materials [C] // ROSE I, MARTI F. Proceedings of 19th International Symposium of Ballistics. Interlaken, Switzerland: Casino Kursaal Congress Center, 2001: 1151−1158.
[2]	LEHR H F, WOLLMAN E, KOERBER G. Experiments with jacketed rods of high fineness ratio [J]. International Journal of Impact Engineering, 1995, 17: 517–526. DOI: 10.1016/0734-743X(95)99876-S.
[3]	PEDERSEN B A, BLESS S J, CAZAMIAS J U. Hypervelocity jacketed penetrators [J]. International Journal of Impact Engineering, 2001, 26(1−10): 603–611. DOI: 10.1016/S0734-743X(01)00121-X.
[4]	ANDERSSON O, OTTOSSON J. High velocity jacketed long rod projectiles hitting oblique steel plates [C] // ROSE I, MARTI F. Proceedings of the 19th International Symposium on Ballistics. Interlaken, Switzerland: Casino Kursaal Congress Center, 2001: 1241−1247.
[5]	PESKES G J J M, LANZ W. Evaluation of replica scale jacketed penetrators for tank ammunition [C] // ROSE I, MARTI F. Proceedings of the 19th International Symposium on Ballistics. nterlaken, Switzerland: Casino Kursaal Congress Center, 2001: 1223−1229.
[6]	CULLIS I G, LYNCH N J. Hydrocode and experimental analysis of scale size jacketed KE projectiles [C] // ROSE I, MARTI F. Proceedings of the 19th International Symposium on Ballistics. Casino Kursaal Congress Center, 1993: 271−280.
[7]	JOHNSON G R, COOK W H. A constitutive model and data for metals subjected to large strains, high strain rates and high temperature [C] // PASMAN H. Proceedings of the 7th International Symposium on Ballistics. The Hague, Netherlands, 1983: 541−547.
[8]	STEINBERG D J, COCHRAN S G, GUINAN M W. A constitutive model for metals applicable at high strain rate [J]. Journal of Applied Physics, 1980, 51: 1498–1504. DOI: 10.1063/1.327799.
[9]	AUTODYN, Theory manual revision 4.3 [Z]. Concord, Mass, USA: Century Dynamics, 2005.
[10]	LEE M. Analysis of jacketed rod penetration [J]. International Journal of Impact Engineering, 2000, 24(9): 891–905. DOI: 10.1016/S0734-743X(00)00020-8.
[11]	荣光, 黄德武. 钨纤维复合材料穿甲弹芯侵彻时的自锐现象 [J]. 爆炸与冲击, 2009, 29(4): 351–355. DOI: 10.11883/1001-1455(2009)04-0345-06. RONG G, HUANG D W. Self-sharpening phenomena of tungsten fiber composite material penetrators during penetration [J]. Explosion and Shock Waves, 2009, 29(4): 351–355. DOI: 10.11883/1001-1455(2009)04-0345-06.
[12]	HOHLER V, STILP A J. Hypervelocity impact of rod projectiles with L/D from 1 to 32 [J]. International Journal of Impact Engineering, 1987, 5(1−4): 323–331. DOI: 10.1016/0734-743X(87)90049-2.