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http://dx.doi.org/10.7734/COSEIK.2022.35.1.1

Penetration Model in Soil Considering J-hook Trajectory  

Sung, Seung-Hun (Research and Development Institute, Agency for Defense Development)
Ji, Hun (Research and Development Institute, Agency for Defense Development)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.35, no.1, 2022 , pp. 1-8 More about this Journal
Abstract
This study proposes a penetration model in soil considering the wake separation and reattachment based on the integrated force law (IFL). Rigid body dynamics, the IFL, and semi-empirical resistance function about soil are utilized to formulate the motion of the hard projectile. The model can predict the trajectory in soil considering the spherical cavity expansion phenomenon under various oblique angles and angles of attack (AOA). The Mohr-Coulomb yield model is utilized as the resistance function of the soil. To confirm the feasibility of the proposed model, a comparative study is conducted with experimental results described in the open literature. From the comparative study, the penetration depth estimated from the proposed model had about 13.4% error compared to that of the experimental results. In general, the finite element method is widely used to predict the trajectory in soil for a projectile. However, it takes considerable time to construct the computational model for the projectile and perform the numerical simulation. The proposed model only needs to the dimension of the projectile and can predict the trajectory of the projectile in a few seconds.
Keywords
penetration model; J-hook; wake separation; reattachment;
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1 Adley, M.D., Berger, R.P., Cargile, J.D., White, H.G., Greighton, D.C. (1997) Three Dimensional Projectile Penetration into Curvilinear Geological/Structural Target, user's Guide for PENCRV3D, U.S. Army Waterways Experiment Station, Instruction Report SL-97-1. MS. USA.
2 Danielson, K.T., Adley, M.D. (2000) A Meshless Treatment of Three-Dimensional Penetrator Targets for Parallel Computation, Comput. Mech., 25(2), pp.267~273.   DOI
3 Sun, Q., Sun, Y., Liu, Y., Li, R., Zhao, Y. (2017) Numerical Analysis of the Trajectory Stability and Penetration Ability of Different Lateral-Abnormal Projectiles for Non-Normal Penetration into Soil based on Modified Integrated Force Law Method, Int. J. Impact Eng., 103, pp.159~168.   DOI
4 Heuze, F.E. (1990) An Overview of Projectile Penetration into Geological Materials with Emphasis on Rocks, Int. J. Fock. Mech. Min. Sci. Geomech., 27(1), pp.1~14.   DOI
5 Kong, X., Fang, Q., Hong, J., Wu, H. (2014) Numerical Study of the Wake Separation and Reattachment Effect on the Trajectory of a Hard Projectile, Int. J. Prot. Struct., 5(1), pp.97~117.   DOI
6 Youch, D. (2006) Efficient Calculation of Earth Penetrating Projectile Trajectories, Naval Postgraduate School, California, USA. Master's Thesis.
7 Bernald, R.S., Creighton, D.C. (1979) Projectile Penetration in Soil and Rock: Analysis for Non-Normal Impact, Technical Report SL-79-15. U.S. Army Engineer Waterways Experiment Station Vicksbury MS Structures Laboratory. USA.
8 Forrestal, M.J., Luk, V.K. (1992) Penetration into Soil Targets, Int. J. Impact. Eng., 12(3), pp.427~444.   DOI