Page 20 - 《含能材料》2018年优秀论文

686 FENG Song，RAO Guo‑ning，PENG Jin‑hua

文章编号：10069‑9941（2018）08‑0686‑10

Experimental Study and Numerical Simulation of CL⁃20⁃Based Aluminized
Explosive in Underwater Explosion

FENG Song，RAO Guo⁃ning，PENG Jin⁃hua
（School of Chemical Engineering，Nanjing University of Science & Technology，Nanjing 210094，China）

Abstract：To study the underwater explosion process of hexanitrohexaazaisowurtzitane（CL‑20）‑based polymer bonded explo‑
sives（PBXs）with and without aluminum powders，two kinds of explosives with aluminum contents of 0 and 15% were pre‑
pared. An underwater explosion experimental device was designed，and the images of pressure histories，bubble periods and
bubble pulse of shock wave were obtained. The shock wave energy，bubble energy and total underwater explosion energy of
two kinds of explosives were calculated The underwater explosion process was well‑simulated by the AUTODYN software. Re‑
sults show that when aluminum content increases from 0 to 15%，the total underwater explosion energy increases from 1.4 times
TNT equivalent to 1.7 times TNT equivalent. In the process of bubble pulsation，the light is produced in the bubble of CL‑20‑
based aluminized explosive when the time is from 49.5 ms to 49.8 ms. The peak pressure of aluminized explosives and non‑
aluminized explosives are 15.16 MPa and 15.51 MPa. The bubble of secondary pressure wave are 2.25 MPa and 2.35 MPa，
50.20 ms and 46.76 ms for the bubble periods. The maximum bubble radius are 67.87 cm and 60.27 cm. The simulation results of
aluminized explosives and non‑aluminized explosives overpressure are 14.90 MPa and 15.14 MPa. The bubble of secondary pres‑
sure wave are 2.16 MPa and 2.27 MPa，bubble period for 49.32 ms and 45.90 ms，66.32 cm and 58.89 cm for the maximum
bubble radius. The shock wave and bubble parameters obtained by calculation are in good agreement with experimental results.
Key words：underwater explosion；hexanitrohexaazaisowurtzitane（CL‑20）；aluminized explosive；shock wave；bubble；numerical
simulation
CLC number：TJ55；O384 Doument code：A DOI：10.11943/CJEM2017376

how to research and improve the capacity of explo‑
1 Introduction sives，enhance the energy release. High energy den‑

sity material is one of the research hotspots in under‑
Since the beginning of the Second World War，
the research and literature of underwater explosion water weapon field.
have been fully studied ［1-2］ . As the development of 2，4，6，8，10，12 ‑ Hexanitro ‑ 2，4，6，8，10，12 ‑
modern underwater weapon equipment， the re‑ hexaazaisowurtzitane was firstly synthesized by
［3］
searchers are paying much attention to the issue of Nielsen，commonly known as CL ‑ 20 . CL ‑ 20 is a
relatively new energetic compound with high densi‑
Received Date：2017‑12‑03；Revised Date：2018‑01‑23 ty，good oxygen balance and high explosive pow‑
Published Online：2018‑05‑08 er ［4-8］ . CL‑20 is a polycyclic energetic nitramine，be‑
Project Supported：National Natural Science Foundation For Young
Scholars of China（11101091） cause of its superior ballistic，detonation and explo‑
Biography：FENG Song（1989 -），male，doctor，major in alumi‑ sive performance， which may soon replace the
nized explosive in underwater explosion. monocyclic nitramines RDX and HMX to be the next
e‑mail：240850587@qq.com
Corresponding author：RAO Guo‑ning（1978-），male，lecturer，ma‑ generation of high ‑energy material ［9-10］ . Aluminized
jor in a study of explosion mechanics. explosives are widely used in underwater weapon，
e‑mail：njraoguoning@163.com
which can raise reaction temperature，increase bub‑
引 用 本 文 ：冯 凇 ，饶 国 宁 ，彭 金 华 . CL‑20 基 含 铝 炸 药 水 下 爆 炸 实 验 研 究 与 数 值 模 拟［J］. 含 能 材 料 ，2018，26（8）：686-695.
FENG Song，RAO Guo‑ning，PENG Jin‑hua. Experimental Study and Numerical Simulation of CL‑20‑Based Aluminized Explosive in Underwater Explosion［J］.
Chinese Journal of Energetic Materials（Hanneng Cailiao），2018，26（8）：686-695.
Chinese Journal of Energetic Materials，Vol.26, No.8 , 2018（686-695） 含能材料 www.energetic-materials.org.cn