Research on Initial Velocity and Penetration Ability of 50SiMnVB Steel Shell Formed Fragments

Abstract:

For 50SiMnVB steel shell formed fragments, AUTODYN-3D finite element software was applied to numerical simulate the process of fragment forming. The change law of velocity distribution of 50SiMnVB steel shell formed fragments under high energy explosive charge along the warhead axial was obtained. And the maximum velocity and penetration ability of 50SiMnVB steel shell formed fragments was researched by experiment. The result shows that, the whole process of shell breaking is about 70μs, and the velocity of shell expanding during it can be distributed to three phases called librating, accelerating and stability. The minimum initial velocity of fragments appears at where approaching detonation point, and its quantity is about 931.7m/s; The maximum initial velocity appears at where away from detonation point about 60% cylinder length, and its quantity is about 1488.3m/s. When fragment group penetrates 5mm thickness armor steel target with 1215m/s, its penetration probability is about 46.2%.

• Periodical: Applied Mechanics and Materials (Volumes 488-489)
• Pages: 162-166
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.488-489.162
• Online since: January 2014
• Authors: Chun Chen*, Wei Bing Li, Xiao Ming Wang, Hai Tao Lu
• Keywords: 50SiMnVB, Fragment Initial Velocity, Numerical Simulate, Penetrate

References

[1] Dong Han, Li Guifen, Chen Nanping. Dynamic Tensile Behavior Of High Strength 50SiMnVB Steel [J]. Material Science And Technology, 1996, 4(2): 16-19.

[2] Chang Liezhen, Pan Yutian, Zhang Zhimin etc. Johnson-Cook Constitutive Model For Hardened And Tempered 50SiMnVB Steel [J]. Ordnance Material Science And Engineering, 2010, 33(4): 68-71.

[3] Chang Liezhen, Zhang Zhimin, Fan Yuheng. The Influence Of Temperature To Dynamic Mechanics Character Of 50SiMnVB Steel [J]. Journal Of North University Of China, 2009, 30(5): 489-494.

[4] Elmar Strassburger, Martin HunZiger. Analysis Of The Fragmentation Of AION And Spinel Under Ballistic Impact[J]. Journal Of Applied Mechanics, 2013, 5(40): 1006-1014.

[5] Zhong Kai, Yuan Baohui, Xu Biying etc. Fragment Velocity Distribution Of Forward-firing Warhead[J]. Chinese Journal Of Explosives And Propellants, 2008, 3(31): 20-24.

[6] Zhang Bo, Li Weibing, Li Wenbin etc. Numerical Simulation Of The Dispersion Of Random Fragments Under Asymmetrical Initiation [J]. Chinese Journal Of High Pressure Physics, 2012, 4(26): 442-448.