Numerical analysis of shaped charge jet penetration into discrete concrete targets using LS-DYNA and ANSYS-AUTODYN

Document Type : Research Article

Authors

1 Mechanical Engineering Department, Mechanical, Electrical and Computer Engineering faculty, Science and Research branch, Islamic Azad University, Tehran, Iran

2 Mechanical Engineering Department, Mechanical Engineering faculty, Sharif University of Technology, Tehran, Iran

3 Mechanical Engineering Department, Mechanical Engineering faculty, Tarbiat Modares University, Tehran, Iran

4 PhD, Mechanical Engineering Department, Mechanical Engineering faculty, Malek Ashtar University.

5 Mechanical Engineering Department, Mechanical Engineering faculty, Malek Ashtar University, Tehran, Iran

6 Mechanical Engineering Department, Mechanical Engineering faculty, Tehran University, Tehran, Iran

Abstract

Discrete concrete targets show more resistance to penetration against shaped charges. The purpose of this study is to simulate the penetration of shaped charge in discrete concrete targets using LS-DYNA and ANSYS-AUTODYN and compare the results. For this purpose, the simulation process for one of the experimental results is performed and the results obtained from both software are validated. Finally, the results of two software in the fields of jet velocity, penetration depth, entry diameters, middle and exit crater, and run time are compared. Application of the ALE method for jet elements and the RHT concrete model to simulate the concrete behavior at high strain rates yielded good results. Differences in numerical solution method and command differences in the interaction of the Lagrangian and Eulerian elements in two software caused the depth of penetration in ANSYS-AUTODYN to be less than the LS-DYNA and the diameters of entry, middle and exit crater in ANSYS-AUTODYN become larger than the LS-DYNA and closer to the experimental results. The results of the two software are in good agreement with the experimental results. Continuous concrete was also simulated and it was found that the penetration depth of discrete concrete was lower than continuous concrete. 

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References

[1] A. Resnyansky, G. Katselis, A. Wildegger-Gaissmaier, Experimental and numerical study of the shaped charge jet perforation against concrete target, in:  Proceedings of 21st international symposium on ballistics, CD-ROM proceedings, additional entries, paper, Vol(1) 2004.
[2] F. Hu, H. Wu, Q. Fang, J. Liu, Numerical simulations of shaped charge jet penetration into concrete-like targets, International Journal of Protective Structures, 8(2) (2017) 237-259.
[3] Z. Tu, Y. Lu, Evaluation of typical concrete material models used in hydrocodes for high dynamic response simulations, International Journal of Impact Engineering, 36(1) (2009) 132-146.
[4] N. Dashtin Gerami, G.H. Liaghat, G.H. Rahimi, N. Khazraiyan, Investigation of performance of anti structure tandem projectiles in to the concrete targets by numerical and experimental method, Modares Mechanical Engineering, 16(10) (2016) 9-18. (in Persian)
[5] G. Birkhoff, D.P. MacDougall, E.M. Pugh, S.G. Taylor, Explosives with lined cavities, Journal of Applied Physics, 19(6) (1948) 563-582.
[6] H. Hatami, A. Dalvand, A.S. Chegeni, Experimental investigation of impact loading effects on rectangular flat panels of fiber self‑compacting cementations composite with expanded steel sheet, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 42(6) (2020).
[7] H. Hatami, A. Fatholahi, The theoretical and numerical comparison and investigation of the effect of inertia on the absorbent collapse behavior of single cell and two-cell reticular under impact loading, Amirkabir Journal of Mechanical Engineering, 50 (2017) 51-60. (in Persian)
[8] A. Jahromi Ghodsbin, H. Hatami, Numerical Behavior Study of Expanded Metal Tube Absorbers and Effect of Cross Section Size and Multi-Layer under Low Axial Velocity Impact Loading, Amirkabir Journal of Mechanical Engineering, 49(4) (2018) 685-696. (in Persian)
[9] W. Gooch, M. Burkins, W. Walters, A. Kozhushko, A. Sinani, Target strength effect on penetration by shaped charge jets, International journal of impact engineering, 26(1-10) (2001) 243-248.
[10] M. Held, Penetration cutoff velocities of shaped charge jets, Propellants, Explosives, Pyrotechnics, 13(4) (1988) 111-119.
[11] R. DiPersio, J. Simon, A. Merendino, Penetration of shaped-charge jets into metallic targets, US Army Ballistic Research Laboratory, BRL, (1965).
[12] N. Zlatin, A. Kozhushko, Hydrodynamic Model Concepts in the Theory of High-velocity Interaction of Solids and the Limits of their Applicability, Sov. Phys. Tech. Phys., 27(2) (1982) 212-214.
[13] A. Kozhushko, A. Izotov, V. Lazarev, A. Balankin, Hydrodynamic model concepts in the problem of dynamic strength of materials of a different physico-chemical nature. 2. Effect of tensile properties of medium, Neorganicheskie Materialy, 29(9) (1993) 1189-1209.
[14] S.L. Hancock, An extension of the umin model for cutoff of high precision jets, International journal of impact engineering, 26(1-10) (2001) 289-298.
[15] D. Chi, J. Conner, R. Jones, A Computational Model for the Penetration of Precision Shaped Charge Warheads, in:  Proceedings of 11th International Symposium on Ballistics, 1989.
[16] J. Brown, Modelling and Experimental Studies of a Family of Shaped Charges in an European Collaborative Forum, in:  Proceedings of the 12th International Symposium on Ballistics, 1990, pp. 27-41.
[17] H. Mehmannavaz, G. Liaghat, M. Nabakhteh, H. Fazeli, M. Rouhbakhsh, A. Heidari, Numerical Analysis of Reactive Shaped Charges with Bimetallic Liner into Discrete Layer Steel Target, Modares Mechanical Engineering, 20(1) (2019) 171-179. (In Persian).
[18] H. Mehmannavaz, G. Liaghat, S. Rahmati, M. Najafi, H. Fazeli, Numerical analysis of shaped charge bimetallic liners effects on diameter and depth of penetration into steel targets, Aerospace Mechanics Journal (2019). (In Persian).
[19] H. Mehmannavaz, G. Liaghat, S. Rahmati, M. Najafi, H. Fazeli, Theoretical, numerical and experimental analysis of bimetallic Cu–Al shaped charge’s liners and its influence on the penetration depth and the crater diameter of steel targets, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 41(8) (2019) 336.
[20] C. Wang, W. Xu, S.C.K. Yuen, Penetration of shaped charge into layered and spaced concrete targets, International Journal of Impact Engineering, 112 (2018) 193-206.
[21] T. Shirai, A. Kambayashi, T. Ohno, H. Taniguchi, M. Ueda, N. Ishikawa, Experiment and numerical simulation of double-layered RC plates under impact loadings, Nuclear engineering and design, 176(3) (1997) 195-205.
[22] P.M. Booker, J.D. Cargile, B.L. Kistler, V. La Saponara, Investigation on the response of segmented concrete targets to projectile impacts, International Journal of Impact Engineering, 36(7) (2009) 926-939.
[23] W.P. Walters, J.A. Zukas, Fundamentals of shaped charges, John Wiley, 1989.
[24] W. Riedel, K. Thoma, S. Hiermaier, E. Schmolinske, Penetration of reinforced concrete by BETA-B-500 numerical analysis using a new macroscopic concrete model for hydrocodes, in:  Proceedings of the 9th International Symposium on the Effects of Munitions with Structures, Berlin-Strausberg Germany, Vol. 315. 1999.
[25] W. Riedel, Beton unter dynamischen Lasten: Meso-und makromechanische Modelle und ihre Parameter, EMI, 2000.
[26] A. Rasouli, H. Toopchi-Nezhad, coupled vs uncoupled analysis of one-way RC-slabs under nearby air explosions, International Journal of Advanced Structural Engineering, 10(4) (2018) 421-437.
[27] T. Borrvall, W. Riedel, The RHT concrete model in LS-DYNA, in:  Proceedings of The 8th European LS-DYNA user conference, 2011.
[28] J.T. Harrison, Improved analytical shaped charge code: Basc, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, 1981.
[29] D.J. Benson, an efficient, accurate, simple ALE method for nonlinear finite element programs, Computer methods in applied mechanics and engineering, 72(3) (1989) 305-350.
[30] D. Hasenberg, Consequences of coaxial jet penetration performance and shaped charge design criteria,  (2010).
[31] M.J. Murphy, Shaped-charge penetration in concrete: a unified approach, Lawrence Livermore National Lab., CA (USA), 1983.
 
 
Amirkabir Journal of Mechanical Engineering
Volume 53, Issue 6 (Special Issue)
September 2021
Pages 3953-3970

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