Fracture Characteristics of Metal Cylinder Shells with Different Charges

doi:10.3969/j.issn.1000-1093.2019.07.011

Abstract

Abstract: Expansion experiments of TA2 titanium alloy cylindrical shells with different thickness charges were carried out to study the effect of explosive load on fracture process of metal cylindrical shells, and the recovered fragments was microcosmically analyzed. The experimental results show that，when solid charge is used， the adiabatic shear bands distributed at 45° or 135° occur in the inner wall of TA2 cylindrical shell, and the cracks on the inner wall expand along the adiabatic shear bands to cause the fracture of shell; when a 1.9 mm-thick cavity charge is exploded, the cylindrical shell still exhibits a shear fracture mode, but the cracks are first generated in the center of the cross-section of cylindrical shell and extend to the inner and outer surfaces. As the thickness of cavity charge is decreased to 1.2 mm, the damage zone in the center of the cross-section of cylindrical shell is wider and the spallation occurs. The analysis shows that the fracture mode and mechanism of cylindrical shell are related to the explosion pressure and the ratio of load pulse width to wall thickness, which is a process involving the propagation of shock wave along the thickness and the competition of multiple physical failure mechanisms. Key

Key words: charge, metalcylinder, blastload, fracture

CLC Number:

O383⁺.3

YU Fuyou, DONG Xinlong, YU Xinlu, FU Yingqian. Fracture Characteristics of Metal Cylinder Shells with Different Charges[J]. Acta Armamentarii, 2019, 40(7): 1418-1424.

References

［1］朱建士, 陈裕泽. 核武器研制中的力学问题[J]. 力学与实践, 2002, 24(1): 67-71.
ZHU J S, CHEN Y Z． Mechanics in research and development of nuclear weapons［J］. Mechanics in Engineering, 2002,24(1):67-71. (in Chinese)
[2］杨云川, 朱建军, 郑宇, 等. 战斗部壳体爆炸破片体/线分形维数研究[J]. 兵工学报, 2018, 39(8): 1499-1506.
YANG Y C, ZHU J J, ZHENG Y, et al. Research on fractal dimensions/line fractal dimension of warhead shell[J]. Acta Armamentarii, 2018, 39(8): 1499-1506. (in Chinese)
[3］陈志闯, 李伟兵, 朱建军, 等. 40CrMnSiB 钢圆柱壳体膨胀断裂中间状态回收试验研究[J]. 兵工学报, 2018, 39(11): 2137-2144.
CHEN Z C, LI W B, ZHU J J, et al. Experimental study on recovery of intermediate state of 40CrMnSiB steel cylindrical shell with expansion fracture[J]. Acta Armamentarii, 2018, 39(11): 2137-2144. (in Chinese)
[4］ TAYLOR G I. The fragmentation of tubular bombs[J]. Advisory Council on Scientific Research and Technical Development, 1963, 5(1): 202-320.
[5］ HOGGATT C R, RECHT R F. Fracture behavior of tubular bombs[J]. Journal of Applied Physics, 1968, 39(3): 1856-1862.
[6］ BEETLE J C, RINNOVATORE J V, CORRIE J D. Fracture morphology of explosively loaded steel cylinders [C]∥Proceedings of the 4th Annual Scanning Electron Microscope Symposium．Chicago, IL,US : Illinois Research Institute, 1971:137-144．
[7］ SINGH M, SUNEJA H R, BOLA M S, et al. Dynamic tensile deformation and fracture of metal cylinders at high strain rates[J]. International Journal of Impact Engineering, 2002, 27(9): 939-954.
[8］胡海波, 汤铁钢, 胡八一, 等. 金属柱壳在爆炸加载断裂中的单旋现象[J]. 爆炸与冲击, 2004, 24(2): 97-107.
HU H B, TANG T G, HU B Y, et al．A study of uniform shear bands orientation selection tendency on explosively loaded cylindrical shells ［J］． Explosion and Shock Waves, 2004, 24(2): 97-107．(in Chinese)
[9］胡海波, 王德生. 炸药加载圆柱壳的初始断裂及断裂模式实验研究总结[R］. 绵阳:中国工程物理研究院流体物理研究所, 1992.
HU H B, WANG D S. Experimental study on initial fracture and fracture mode of explosive loaded cylindrical shell [R]. Mianyang: Institute of Fluid Physics, China Academy of Engineering Physics, 1992. (in Chinese)

[10］汤铁钢, 李庆忠, 孙学林, 等. 45钢柱壳膨胀断裂的应变率效应[J]. 爆炸与冲击, 2006, 26(2): 129-133.
TANG T G, LI Q Z, SUN X L, et al．Strain-rate effects of expanding fracture of 45 steel cylinder shells driven by detonation［J］．Explosion and Shock Waves, 2006, 26(2): 129-133．(in Chinese)
[11］胡八一. 金属圆筒在内部爆轰加载下的膨胀断裂机理[D］. 绵阳:中国工程物理研究院流体物理研究所,1993.
HU B Y. Expansion fracture mechanism of metal cylinder under internal detonation loading [D]. Mianyang: Institute of Fluid Physics, China Academy of Engineering Physics, 1993.(in Chinese)
[12］ GOTO D M, BECKER R, ORZECHOWSKI T J, et al. Investigation of the fracture and fragmentation of explosively driven rings and cylinders[J]. International Journal of Impact Engineering, 2008, 35(12):1547-1556.
[13］张世文, 金山, 刘仓理. 含缺陷厚壁圆管爆轰膨胀断裂的数值模拟[J]. 应用力学学报, 2010,27(3): 622-625.
ZHANG S W, JIN S , LIU C L．Simulation of the dynamic expanding process of thick-walled cylinder with defects［J］． Chinese Journal of Applied Mechanics, 2010, 27(3): 622-625． (in Chinese)
[14］金山, 张世文, 龙建华. 缺陷对圆管膨胀断裂影响的实验研究[J]. 高压物理学报, 2011, 25(2): 188-192.
JIN S, ZHANG S W, LONG J H. Experimental study on the effect of defects on expansion and fracture of circular tubes [J]. Journal of High Pressure Physics, 2011, 25(2): 188-192. (in Chinese)
[15］俞鑫炉, 董新龙, 付应乾, 等. 金属柱壳外爆膨胀断裂特性的数值模拟研究[J]. 兵工学报, 2014, 35(增刊2): 257-262.
YU X L, DONG X L, FU Y Q, et al. Numerical simulation study on the fracture characteristics of metal cylindrical shells with explosive expansion[J]. Acta Armamentarii, 2014, 35(S2): 257-262.(in Chinese)
[16］俞鑫炉, 董新龙, 潘顺吉. 不同爆炸载荷下 TA2 钛合金圆管膨胀破坏过程[J]. 爆炸与冲击, 2018, 38(1): 148-154.
YU X L, DONG X L, PAN S J. Expansion and failure process of TA2 titanium alloy tube under different explosive loads[J]. Explosion and Shock Waves, 2018, 38(1): 148-154. (in Chinese)
[17］潘顺吉,俞鑫炉,董新龙. 不同载荷下TA2钛合金柱壳爆炸碎裂的实验研究[J].高压物理学报,2017,31(4):382-388.
PAN S J, YU X L, DONG X L. Experimental study on explosive fragmentation of TA2 titanium alloy cylindrical shells under different loads [J]. Journal of High Pressure Physics, 2017, 31(4): 382-388. (in Chinese)
[18］丁亮亮, 李翔宇, 卢芳云, 等. 填充介质柱壳在侧向爆炸载荷作用下的变形机理研究[J]. 兵工学报, 2017, 38(增刊1):24-29.
DING L L, LI X Y, LU F Y, et al. Deformation mechanism of cylindrical shells filled with dielectric under lateral explosive loading[J]. Acta Armamentarii, 2017, 38(S1):24-29. (in Chinese)
[19］朱建军, 李伟兵, 李文彬, 等. 高应变率下金属柱壳动态变形及形成破片特性研究[J]. 兵工学报, 2017, 38(10): 1933-1941.
ZHU J J, LI W B, LI W B, et al. Dynamic deformation and fragmentation characteristics of metal cylindrical shells under high strain rate[J]. Acta Armamentarii, 2017, 38(10): 1933-1941. (in Chinese)

第40卷
第7期2019 年7月兵工学报ACTA
ARMAMENTARIIVol.40No.7Jul.2019

[1]	WANG Xinyu, JIANG Chunlan, WANG Zaicheng, FANG Yuande. Research on the Pressure Relief Structure of JEO Shaped Charge Warhead during Cook-off [J]. Acta Armamentarii, 2024, 45(1): 1-14.
[2]	FAN Yong, WU Fan, LENG Zhengdong, YANG Guangdong, ZHAO Xiaohua. Peak Elimination Effect of Radial Uncoupled Charge on Explosion Pressure and Its Influence on Rock Fracture Range [J]. Acta Armamentarii, 2024, 45(1): 131-143.
[3]	KOU Yongfeng, YANG Kun, ZHANG Bin, XIAO Yiwen, LU Jianying, CHEN Lang. Research on Thermal Safety of Warhead Charge Based on Cook-off Experimental and Numerical Simulation [J]. Acta Armamentarii, 2023, 44(S1): 41-49.
[4]	XU Bian, ZHENG Yuxuan, YANG Hongsheng, ZHOU Fenghua. Ductile Fragmentation with a Power Law Cohesive Fracture Model [J]. Acta Armamentarii, 2023, 44(5): 1493-1501.
[5]	LI Ziyu, YU Yonggang. Analysis of Propellant Pellets’ Dispersion Characteristics of Single Modular Charge Based on Discrete Element Method for Non-Spherical Particles [J]. Acta Armamentarii, 2023, 44(5): 1330-1338.
[6]	WANG Haifu, HE Suo, CAI Yiqiang, XIANG Jing'an, SU Chenghai, GUO Huanguo. Damage Behavior of Multi-layer Spaced Target Plates Penetrated by Reactive Composite Jet [J]. Acta Armamentarii, 2023, 44(2): 325-333.
[7]	MA Jun, WANG Xuguang, LI Xianglong, WANG Jianguo. Experiment on Dynamic Mechanical Characteristics and Damage Fractal Law of Crack in Decoupled Charge Scratch Blasting [J]. Acta Armamentarii, 2023, 44(12): 3676-3686.
[8]	XU Yingliang, LIU Yan, YAN Junbo, BAI Fan, YU Hao, LI Xu, WANG Hongfu. The Damage Effect of Reinforced Concrete Beams Subjected to Synchronous Explosion of Double Charges [J]. Acta Armamentarii, 2023, 44(12): 3719-3732.
[9]	HUANG Wenkuan, QIAN Linfang, YIN Qiang, LIU Taisu. Fault Diagnosis Method of Modular Charge Feeding Mechanism Based on Transfer Learning [J]. Acta Armamentarii, 2023, 44(10): 2964-2974.
[10]	WANG Cuicui, YAN Ruiqian, DING Zhanming, TONG Ding, WU Xintao, GAO Chao, ZHUANG Li. Experimental and Simulation Study on Axial Force Variation of Turbocharger [J]. Acta Armamentarii, 2023, 44(1): 307-315.
[11]	YU Yilei, WANG Xiaodong, REN Wenke, MA Minghui, JIANG Zhaoxiu, GAO Guangfa. Fragmentation Characteristics of 12.7mm Armor-piercing Incendiary Projectile and Ceramic/Metal Composite Target DuringPenetration [J]. Acta Armamentarii, 2022, 43(9): 2307-2317.
[12]	WANG Yuting, HUANG Zhengxiang, ZU Xudong, MA Bin, XIAO Qiangqiang, JIA Xin. Jet Formation and Penetration of Shaped Charge with Isosceles Trapezoidal Cross-section [J]. Acta Armamentarii, 2022, 43(4): 748-757.
[13]	LI Yanxing, WANG Lin, YAN Zhiwei, AN Rui, ZHOU Zhe, NING Zixuan, CHENG Huanwu, CHENG Xingwang. Deformation and Fracture Behaviors of Ti6321 Titanium Alloy with Different Microstructures at Low Temperature and HighStrain Rate Conditions [J]. Acta Armamentarii, 2022, 43(12): 3221-3227.
[14]	DANG Quanyong, GE Yanxin, GAO Yubo. Dynamic Mechanical Properties of Al₂O₃/SiC Composite Ceramic Subjected to Impact Loading [J]. Acta Armamentarii, 2022, 43(1): 175-180.
[15]	YANG Pantao， CUI Tao， ZHAO Yankai， HE Wenqin， YU Congcong. The Influence of Electric Supercharger on Steady State Performance of Engine at Low Speed [J]. Acta Armamentarii, 2021, 42(9): 1829-1837.