Dynamical Penetration Simulation of Solid Target under Shaped Charge Liner

Abstract:

A finite element model of rock mass under linear conical shaped charge liner including explosive, metal liner, air and rock mass is built. The ALE algorithm is applied to simulate the penetration characteristic of rock mass and analyze the influencing factors such as the cone angle, the wall thickness of metal liner, and the standoff distance. Fluid-structure coupling condition is used between metal liner and air as well as between air and rock mass. The present results show that LS-DYNA can be well used to simulate the progress of jet formation and rock penetration with the transmission and focusing of shock stress wave. The different cone angles, wall thicknesses of the metal liner, and the standoff distances will influence the penetration effect.

• Periodical: Applied Mechanics and Materials (Volumes 548-549)
• Pages: 410-416
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.548-549.410
• Online since: April 2014
• Authors: Fu Sheng Wang*, Yao Yao Ji, Jing Lin Zhang, Sheng Jun Qiao
• Keywords: Penetration Simulation, Rock Mass, Shaped Charge Liner

References

[1] Y. Xun, L.H. Yan, S.Y. Zeng, Process of the shaped charge technique. Science Technology and Engineering. 8(2008) 4251-4257.

[2] D. Novotney, M. Mallery, Historical development of linear shaped charge. 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Cincinnati, OH, USA, 2007, pp.8-11.

DOI: 10.2514/6.2007-5141

[3] J.F. Molinari, Finite element simulation of shaped charge. Finite Elem Anal Des. 38(2002) 921-936.

[4] D.Q. Cao, S.R. Yun, G.Y. Ding , Q.K. Jin , 3-D numerical simulation of jet penetrate target using ALE method. Journal of Beijing Institute of Technology. 20(2000) 171-173.

[5] L.W. Chen, J.G. Ning, Three-dimensional numerical simulation of shaped charge jet. Chinese Journal of Computational Mechanics. 22(2005) 55-58.

[6] V.V. Bashurov, G.V. Bebenin, A.G. Ioilev, Numerical simulation of rod particles hypervelocity impact effectiveness at various attack angles. Int J Impact Eng. 20 (1997) 255-262.

DOI: 10.1016/s0734-743x(97)87481-7

[7] T. Rabczuk, S.P. Xiao, M. Sauer, Coupling of mesh free methods with finite elements: Basic concepts and test results. Comm Numer Meth Eng. 22(2006) 1031-1065.

DOI: 10.1002/cnm.871

[8] T. Rabczuk, T. Belytschko, A three dimensional large deformation mesh free method for arbitrary evolving cracks. Comput Method Appl M. 196(2007) 2777-2799.

DOI: 10.1016/j.cma.2006.06.020

[9] T. Rabczuk, G. Zi, S. Bordas, H. Nguyen-Xuan, A simple and robust three dimensional cracking-particle method without enrichment. Comput Method Appl M. 199(2010) 2437-2455.

DOI: 10.1016/j.cma.2010.03.031

[10] Z.C. Mi, R.H. Yang, Shaped charge penetrating rocks. Journal of China University of Science and Technology. 28(1998) 200-204.

[11] Z. Z Xiong, C. Wang, D.W. Zhong, Numerical simulation of linear shaped charge on rock cutting. Chinese Journal of Explosives and Propellants. 27(4) (2004) 29-32.

[12] D.H. Liu, Study on the penetration of frozen soil and stone by shaped charge. Master thesis of Dalian University of Technology, Dalian, Liaoning, CHN, (2006).

[13] S. Heimbs, Computational methods for bird strike simulations: A review. Comput Struct. 89 (2011) 2093-2112.

DOI: 10.1016/j.compstruc.2011.08.007

[14] LSTC (Livemore Software Technology Corporation), LS-DYNA theoretical manual. Livermore Software Technology Corporation, Livermore, CA, USA, (1998).

[15] LSTC (Livemore Software Technology Corporation), LS-DYNA keyword user's manual, Livermore Software Technology Corporation, Livermore, CA, USA, (2003).

[16] D.Y. Shi, Y.C. Li, S.M. Zhang, Explicit dynamical analysis based on ANSYS/ LS-DYNA 8. 1, Tsinghua University Press, Beijing, CHN, (2005).