Abstract
The results of physicomathematical modeling obtained within the framework of continuum mechanics by numerical solution of the two-dimensional axisymmetric nonstationary problem of the dynamic deformation of a compressed elastoplastic bar of variable section are presented. Dependences of the quantitative characteristics of stretching and breakup of a shaped-charge jet (the coefficients of ultimate and inertial elongation and the number of individual elements formed in breakup) on the jet parameters and the jet material properties are revealed by calculations. The calculated dependences are compared with experimental data for plastically failing jets of copper and niobium, and the character of the dependences is explained from the physical viewpoint.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. V. Babkin, S. V. Ladov, V. M. Marinin, and S. V. Fedorov, “Characteristics of inertially stretching shaped-charge jets in free flight,”Prikl. Mekh. Tekh. Fiz.,38, No. 2, 3–9 (1997).
A. V. Babkin, S. V. Ladov, V. M. Marinin, and S. V. Fedorov, “Effect of shaped-charge jet compressibility and strength on the characteristics of their inertial stretching in free flight,”ibid., 10–18 (1997).
P. C. Chou and J. Carleone, “The stability of shaped-charge jets,”J. Appl. Phys.,48, No. 10, 4187–4194 (1977).
P. C. Chou, J. Carleone, and R. Karpp, “The stability and break-up of shaped-charge jets,” in:Proc. 3rd Int. Symp. on Ballistics, Karlsruhe (1977), pp. 1–22.
M. L. Wilkins, ⨑Calculation of elastoplastic flows,” in: B. Alder, S. Fernbach, and M. Retenberg (eds.),Fundamentals Methods in Hydrodynamics [Russian translations], Mir, Moscow (1964), pp. 212–263
V. F. Noh, “SEL — simultaneous Euler-Lagrangian method for calculation of nonstationary two-dimensional problems,”ibid., pp. 128–184.
L. P. Orlenko, A. V. Babkin, and V. I. Kolpakov, “Numerical study of the stability of dynamic stretching of a bar,” in:Numerical Methods of Solving elastic and plastic problems: Proc. VIIth All-Union Conf., Inst. of Theor. and Appl. Mech., Novosibirsk (1982), pp. 62–70.
B. Haugstad, “On the break-up of shaped charge jets,”Propellants, Explosives, Pyrotechnics, No. 8, (1983), pp. 119–120.
E. Hirsh, “A formula for the shaped charge break-up time,”Propellants Explosives,4, No. 5, 89–94. (1979).
I. I. Tomashevich, “Penetration of a high-speed flow of elongated elements into an obstacle,”Fiz. Goreniya Vzryva,23, No. 2, (1987), pp. 97–101.
V. M. Marinin, A. V. Babkin, and V. I. Kolpakov, “Procedure of calculating the operating parameters of a shaped charge,”Oboron. Tekh., No. 4, 34–39 (1995).
L. M. Kachanov,Fundamentals of Theory of Plasticity [in Russian], Nauka, Moscow (1969).
Additional information
Bauman Moscow State Technical University, Moscow 107005. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 40, No. 4, pp. 25–35, July–August, 1999.
Rights and permissions
About this article
Cite this article
Babkin, A.V., Ladov, S.V., Marinin, V.M. et al. Regularities of the stretching and plastic failure of metal shaped-charge jets. J Appl Mech Tech Phys 40, 571–580 (1999). https://doi.org/10.1007/BF02468430
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02468430