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mehman navaz, H., liaghat, G., rahmati, S., najafi, M., fazeli, H. (2019). Numerical Analysis of Shaped Charge Bimetallic Liners Effects on Diameter and Depth of Penetration into Steel Targets. Electronic and Cyber Defense, 15(3), 93-105.
hosein mehman navaz; gholam hosein liaghat; sadegh rahmati; mohammad najafi; hamid fazeli. "Numerical Analysis of Shaped Charge Bimetallic Liners Effects on Diameter and Depth of Penetration into Steel Targets". Electronic and Cyber Defense, 15, 3, 2019, 93-105.
mehman navaz, H., liaghat, G., rahmati, S., najafi, M., fazeli, H. (2019). 'Numerical Analysis of Shaped Charge Bimetallic Liners Effects on Diameter and Depth of Penetration into Steel Targets', Electronic and Cyber Defense, 15(3), pp. 93-105.
mehman navaz, H., liaghat, G., rahmati, S., najafi, M., fazeli, H. Numerical Analysis of Shaped Charge Bimetallic Liners Effects on Diameter and Depth of Penetration into Steel Targets. Electronic and Cyber Defense, 2019; 15(3): 93-105.

Numerical Analysis of Shaped Charge Bimetallic Liners Effects on Diameter and Depth of Penetration into Steel Targets

مکانیک هوافضا
Article 7, Volume 15, Issue 3 - Serial Number 57, March 2019, Pages 93-105    PDF (1.05 M)
Document Type: Solid Mechanics
Authors
hosein mehman navaz1; gholam hosein liaghat* 2; sadegh rahmati1; mohammad najafi1; hamid fazeli3
1azad olom tahghighat
2tarbiat modarres
3malek ashtar
Receive Date: 05 May 2018,  Accept Date: 09 October 2018 
Abstract
One of the main important components which are used in the shaped charges is liner that its material has a considerable influence on the jet formation and penetration profile. In recent years, researches have focused on the analysis of the effect of bimetallic liners and their effective behavior. In this paper, at the first step, the process of jet formation and the penetration in the steel target is numerically simulated for a shaped charge with copper liner using the Ansys-Autodyn software. Analytical solutions have been done using generalized PER theory for jet formation and hydrodynamics theory for penetration; as well the experimental tests were performed with copper liner. The comparison of penetration profiles obtained from numerical, experimental and analytical methods showed a good agreement. Then, the validated numerical simulations were developed for two single-metal liners of nickel and aluminum, and two bimetallic copper-nickels, and copper-aluminum liners. Also, the results of jet tip velocity, penetration depth and crater diameter have been compared between single and bimetallic liners. Regarding to jet formation and penetration in steel target, the comparison between single and bimetallic liners results shows that the using bimetallic liners, improve crater diameter and depth of penetration simultaneously.
  
of the main important components which are used in the shaped charges is liner that its material has a considerable influence on the jet formation and penetration profile. In recent years, researches have focused on the analysis of the effect of bimetallic liners and their effective behavior. In this paper, at the first step, the process of jet formation and the penetration in the steel target is numerically simulated for a shaped charge with copper liner using the Ansys-Autodyn software. Analytical solutions have been done using generalized PER theory for jet formation and hydrodynamics theory for penetration; as well the experimental tests were performed with copper liner. The comparison of penetration profiles obtained from numerical, experimental and analytical methods showed a good agreement. Then, the validated numerical simulations were developed for two single-metal liners of nickel and aluminum, and two bimetallic copper-nickels, and copper-aluminum liners. Also, the results of jet tip velocity, penetration depth and crater diameter have been compared between single and bimetallic liners. Regarding to jet formation and penetration in steel target, the comparison between single and bimetallic liners results shows that the using bimetallic liners, improve crater diameter and depth of penetration simultaneously.
 
حلیل عددی تأثیر خرج گود با آستری دوجنسی بر قطر حفره و عمق نفوذ در اهداف فولادی
 
Keywords
Bi-metallic Liner; Shaped Charge; Penetration Depth; Crater Hole Diameter; Jet Tip Velocity
References
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  2. Schilling, T. J. “Reactive-Injecting Follow-Through Shaped Charges from Sequent-Material Conical Liners”, Propellants, Explosives, Pyrotechnics:  Int. J. Sci. Tech. Aspects Energetic Mat., Vol. 32, No. 4, pp. 307-313, 2007.##
  3. Mason, J. S. “Experimental Testing of Bimetallic and Reactive Shaped Charge Liners”, Master Dissertation, Graduate College of the University of Illinois at Urbana-Champaign, 2010.##
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  8. Xiao, Q. Q., Huang, Z.X., Zu, X.D. and Zhu C. S. “Penetration Research of Jacketed Jet Into Concrete”, Int. J. Impact Eng., Vol. 54, pp. 246-253, 2013.##
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10. Zukas, J. A. and Walters, W. P. “Fundamentals of Shaped Charges”, CMC Press, Baltimore, 1989.##

11. Sarana, S., Ayisit O. and Yavuza, M. S. “Experimental Investigations on Aluminum Shaped Charge Liners”, Proc. Eng., Vol. 58, pp. 479 - 486, 2013.##

12.  Dashtian Gerami, N., Liaghat G.H. and Rahimi Sharbaf Moghadas, G.H. “Investigation of Performance of Anti Structure Tandem Projectiles in to the Concrete Targets by Experimental and Numerical Method”, J. Modares Mech. Eng. Vol. 16, No. 10, pp. 9-18, 2016. (in Persian)##

13. Dashtian Gerami, N., Liaghat G.H., Rahimi Sharbaf Moghadas G.H., and Khazraiyan N., “Experimental and Numerical Analysis of the Follow Warhead Penetration of Tandem Projectiles in to the Finite Concrete Targets”, J. Iranian Sci. Asso. Energetic Mat., Vol. 11, No. 3, pp. 37-46, 2016. (in Persian)##

14. Bolstad, J. and Mandell D. “Calculation of Shaped Charge Jet Using MESA-2D and MESA-3D Hydrodynamic Computer Codes”, Los Alamos National Laboratory, New Mexico, 1992.##

15. Dashtian Gerami, N., Liaghat, G.H., Rahimi Sharbaf Moghadas, G.H. and Khazraiyan, N. “Analysis of Liner Effect on Shaped Charge Penetration into Thick Concrete Targets”, J. Braz. Soc. Mech. Sci. Eng, Vol. 39, pp. 3189-3201, 2017.##

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