金属柱壳膨胀断裂的实验与数值模拟
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摘要
基于一端起爆的柱壳外爆加载装置,采用多普勒速度测量仪(DPS)及高速分幅相机联合诊断柱壳的膨胀断裂过程。实验获得了壳体表面的速度历史和膨胀变形、裂纹萌生扩展到爆轰产物泄露的动态图像。利用光滑粒子流体动力学方法(SPH)开展了对应的数值模拟,计算结果与实验结果吻合较好。实验与数值模拟结果系统地给出了冲击波入射柱壳角、爆轰波稀疏角、内壁速度压力历史及壳体变形应变、壳体断裂等物理信息。
Relying on the explosively driven setting of one-end detonator initiation and using the Doppler velocimetry and high-speed framing camera,we diagnosed the expansion and fracture process of the cylindrical shell.The results obtained from our experiment provide the velocity-time history of the shell surface and its dynamic snapshots referring to expansion deformation,crack initiation and propagation,and explosion product leakage.The results from the SPH simulation are in reasonably good agreement with the experimental findings.Systemic analysis of experiments and simulations determine incident angle of shock wave for cylindrical shell,releasing angle of explosion wave,velocity and pressure profile of internal wall and deformed strain,fracture process of cylindrical shell.
Relying on the explosively driven setting of one-end detonator initiation and using the Doppler velocimetry and high-speed framing camera,we diagnosed the expansion and fracture process of the cylindrical shell.The results obtained from our experiment provide the velocity-time history of the shell surface and its dynamic snapshots referring to expansion deformation,crack initiation and propagation,and explosion product leakage.The results from the SPH simulation are in reasonably good agreement with the experimental findings.Systemic analysis of experiments and simulations determine incident angle of shock wave for cylindrical shell,releasing angle of explosion wave,velocity and pressure profile of internal wall and deformed strain,fracture process of cylindrical shell.
引文
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[15]胡昌明,贺红亮,胡时胜.45号钢的动态力学性能研究[J].爆炸与冲击,2003,23(2):188-192.Hu Chang-ming,He Hong-liang,Hu Shi-sheng.A study on dynamic mechanical behavior of 45steel[J].Explosion and Shock Waves,2003,23(2):188-192.
[16]经福谦.实验物态方程导引[M].2版.北京:科学出版社,1999.
[2]Taylor G I.Analysis of the explosion of a long cylindrical bomb detonated at one end[M]∥Scientific Papers of G.I.Taylor,vol.III.Cambridge:Cambridge University Press,1963,30:277-286.
[3]Hoggatt R H,Recht R F.Fracture behavior of tubular bombs[J].Journal of Applied Physics,1968,93(3):1856-1862.
[4]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.
[5]Mott N F.Fragmentation of shell cases[J].Proceedings of Royal Society of London,Series A,1947,43(2):300-308.
[6]Grady D E.Fragmentation of rings and shells:The legacy of N.F.Mott[M].New York:Springer,2006.
[7]Grady D E,Olsen M L.A statistics and energy based theory of dynamic fragmentation[J].International Journal of Impact Engineering,2003,29(10):293-306.
[8]Martineau R L,Anderson C A,Smith F W.Expansion of cylindrical shells subjected to internal explosive detonations[J].Experimental Mechanics,2000,40(2):219-225.
[9]Goto D M,Becker R,Orzechowski T J,et al.Investigation of the fracture and fragmenation of explosively driven rings and cylinders[J].International Journal of Impact Engineering,2008,35(12):1547-1556.
[10]胡八一,董庆东,韩长生,等.TC4钛合金及40Cr钢破片中绝热剪切的TEM分析[J].高压物理学报,1996,10(1):37-43.Hu Ba-yi,Dong Qing-dong,Han Chang-sheng,et al.TEM observation of shear bands in Ti-6Al-4Vand 6140steel[J].Chinese Journal of High Pressure Physics,1996,10(1):37-43.
[11]汤铁钢,谷岩,李庆忠,等.爆轰加载下金属柱壳膨胀破裂过程研究[J].爆炸与冲击,2003,23(6):529-533.Tang Tie-gang,Gu Yan,Li Qing-zhong,et al.Expanding fracture of steel cylinder shell by detonation driving[J].Explosion and Shock Waves,2003,23(6):529-533.
[12]胡海波,汤铁钢,胡八一,等.金属柱壳在爆炸加载断裂下的单旋现象[J].爆炸与冲击,2004,24(2):97-107.Hu Hai-bo,Tang Tie-gang,Hu Ba-yi,et al.An study of uniform shear bands orientation selection tendency on explosively loaded cylindrical shells[J].Explosion and Shock Waves,2004,24(2):97-107.
[13]谭成文,王富耻,李树奎,等.内爆炸加载条件下圆筒的膨胀、破裂规律研究[J].爆炸与冲击,2003,23(4):305-308.Tan Cheng-wen,Wang Fu-chi,Li Shu-kui,et al.Deformation and fracture of cylindrical tube under inside explosive loading[J].Explosion and Shock Waves,2003,23(4):305-308.
[14]王新征,张松林,邹广平.内部短药柱爆炸作用下钢筒破裂特征的数值分析[J].高压物理学报,2010,24(1):61-66.Wang Xin-zheng,Zhang Song-lin,Zou Guang-ping.Numerical analysis on fragmentation properties of the steel cylinder subjected to detonation of internal short cylindrical explosive charge[J].Chinese Journal of High Pressure Physics,2010,24(1):61-66.
[15]胡昌明,贺红亮,胡时胜.45号钢的动态力学性能研究[J].爆炸与冲击,2003,23(2):188-192.Hu Chang-ming,He Hong-liang,Hu Shi-sheng.A study on dynamic mechanical behavior of 45steel[J].Explosion and Shock Waves,2003,23(2):188-192.
[16]经福谦.实验物态方程导引[M].2版.北京:科学出版社,1999.