Stability analyses of the mass abrasive projectile high-speed penetrating into concrete target. Part I: Engineering model for the mass loss and nose-blunting of ogive-nosed projectiles

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• 作者：Hao Wu (1) (2)
  Xiao-Wei Chen (1)
  Li-Lin He (1)
  Qin Fang (2)
  
  1. Institute of Systems Engineering ; China Academy of Engineering Physics ; 621900 ; Mianyang ; China
  2. State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact ; PLA University of Science and Technology ; 210007 ; Nanjing ; China
  
• 关键词：Projectile ; High ; speed penetration ; Concrete ; Mass loss ; Nose ; blunting
• 刊名：Acta Mechanica Solida Sinica
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：30
• 期：6
• 页码：933-942
• 全文大小：613 KB
• 参考文献：1. Chen, X.W., Li, Q.M.: Transition from non-deformable projectile penetration to semi-hydrodynamic penetration. J. Eng. Mech. ASCE. 130, 123鈥?27 (2004) CrossRef
  2. Lundgren, R.G.: High velocity penetrator. SAND94-2724C, Conf-9411142-1 (1994)
  3. Wu, H., Fang, Q., Zhang, Y.D., et al.: Semi-theoretical analyses of the concrete plate perforated by a rigid projectile. Acta Mech. Sin. 28, 1630鈥?643 (2012) CrossRef
  4. Wen, H.M., Lan, B.: Analytical models for the penetration of semi-infinite targets by rigid, deformable and erosive long rods. Acta Mech. Sin. 26, 573鈥?83 (2010) CrossRef
  5. He, X., Xu, X.Y., Sun, G.J., et al.: Experimental investigation on projectiles high-velocity penetration into concrete targets. Chin. J. Explosion and Shock Waves 30, 1鈥? (2010) (in Chinese)
  6. Wu, H.J., Huang, F.L., Wang, Y.N., et al.: Experimental investigation on projectile nose eroding effect of high-velocity penetration into concrete. Acta Armamentarii 33, 48鈥?5 (2012) (in Chinese)
  7. Forrestal, M.J., Frew, D.J., Hanchak, S.J, et al.: Penetration of grout and concrete targets with ogive-nose steel projectiles. Int. J. Impact. Eng. 18, 465鈥?76 (1996) CrossRef
  8. Frew, D.J., Hanchak, S.J., Green, M.L., et al.: Penetration of concrete targets with ogive-nose steel rods. Int. J. Impact. Eng. 21, 489鈥?97 (1998) CrossRef
  9. Mu, Z.C., Zhang, W.: An investigation on mass loss of ogival projectiles penetrating concrete targets. Int. J. Impact. Eng. 38, 770鈥?78 (2011) CrossRef
  10. Wu, H.J., Qian, F., Huang, F.L., et al.:Projectile nose mass abrasion of high-speed penetration into concrete. Advances in Mechanical Engineering. DOI:10.1155/2012/296503 (2012)
  11. Silling, S.A., Forrestal, M.J.: Mass loss from abrasion on ogive-nose steel projectiles that penetrate concrete targets. Int. J. Impact. Eng, 34, 1814鈥?820 (2007) CrossRef
  12. Chen, X.W., He, L.L., Yang, S.Q.: Modeling on mass abrasion of kinetic energy penetrator. Eur. J. Mech. A Solids 29, 7鈥?7 (2010) CrossRef
  13. Wen, H.M., Yang, Y., He, T.: Effects of abrasion on the penetration of ogive-nosedd projectiles into concrete targets. Lat. Am. J. Solids Stru. 7, 413鈥?22 (2010) CrossRef
  14. Jones, S.E., Foster, J.C., Toness, O.A., et al.: An estimate for mass loss from high velocity steel penetrators. In: Moody FJ (Ed.). Proceedings of the ASME PVP-435 Conference on Thermal-Hydraulic Problems, Sloshing phenomena, and Extreme loads on Structures. ASME, New York, 227鈥?37 (2002)
  15. Davis, R.N., Neely, A.M., Jones, S.E.: Mass loss and blunting during high-speed penetration. J. Mech. Eng. Sci. Proc. Inst. Mech. Eng. 218, 1053鈥?062 (2004) CrossRef
  16. He, L.L., Chen, X.W., He, X.: Parametric study on mass loss of penetrators. Acta Mech. Sin. 26, 585鈥?97 (2010) CrossRef
  17. Zhao, J., Chen, X.W., Jin, F.N., et al.: Depth of penetration of high-speed penetrator with including the effect of mass abrasion. Int. J. Impact. Eng. 37, 971鈥?79 (2010) CrossRef
  18. Zhao, J., Chen, X.W., Jin, F.N., et al.: Analysis on the bending of a projectile induced by asymmetrical mass abrasion. Int. J. Impact. Eng. 39, 16鈥?7 (2012) CrossRef
  19. Chen, X.W., Li, Q.M.: Deep penetration of a non-deformable projectile with different geometrical characteristics. Int. J. Impact. Eng. 27, 619鈥?37 (2002) CrossRef
  20. He, L. L., Chen, X.W.: Analyses of the penetration process considering mass loss. Eur. J. Mech. A Solids. 30, 145鈥?57 (2011) CrossRef
  
• 刊物类别：Engineering
• 刊物主题：Theoretical and Applied Mechanics
  Mechanics, Fluids and Thermodynamics
  Engineering Fluid Dynamics
  Numerical and Computational Methods in Engineering
  Chinese Library of Science
  
• 出版者：The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of
• ISSN：1614-3116

文摘

The mass loss and nose blunting of a projectile during high-speed deep penetration into concrete target may cause structural destruction and ballistic trajectory instability of the penetrator, obviously reducing the penetration efficiency of penetrator. Provided that the work of friction between projectile and target is totally transformed into the heat to melt penetrator material at its nose surface, an engineering model is established for the mass loss and nose-blunting of the ogive-nosed projectile. A dimensionless formula for the relative mass loss of projectile is obtained by introducing the dimensionless impact function I and geometry function N of the projectile. The critical value V 0 c of the initial striking velocity is formulated, and the mass loss of projectile tends to increase weakly nonlinearly with I/N when V 0 V 0 c , whilst the mass loss is proportional to the initial kinetic energy of projectile when V 0 V 0 c . The theoretical prediction of V 0 c is further confirmed to be very close to the experimental value of 1.0 km/s based on 11 sets of different penetration tests. Also the validity of the proposed expressions of mass loss and nose-blunting coefficients of a projectile are verified by the tests. Therefore, a theoretical basis is for the empirical conclusions drawn in previous publications. Regarding the completely empirical determinations of the mass loss and nose-blunting coefficients given in previous papers, the present analysis reveals its physical characteristic and also guarantees its prediction accuracy. The engineering model established in the present paper forms the basis for further discussions on the structural stability and the terminal ballistic stability of ogive-nosed projectiles high-speed penetrating into concrete targets, which will respectively be elaborated in Part II and Part III of the present study.