Response of 1100-H12 Aluminum Targets to Varying Span and Configuration

Abstract:

The influence of target span as well as configuration was studied with 1 mm thick 1100H12 aluminum target subjected to19 mm diameter ogive nosed projectile impact. The effective span of 1 mm thick monolithic target was varied as 95, 190, 285, 380 and 475 mm. The configuration of 255 mm span diameter target was varied as 1 mm thick monolithic, double layered in-contact (2 x 0.5 mm) and double layered spaced. The spacing between the layers was also varied as 2, 5, 10 and 20 mm. The target was impacted normally by ogive nosed projectile to obtain the ballistic limit, failure mode and deformation. The ballistic limit was found to increase with an increase in span diameter. The monolithic target offered highest ballistic limit followed by layered in-contact and spaced targets respectively. The variation of spacing between the layers did not have significant influence on the ballistic limit.

• Periodical: Key Engineering Materials (Volumes 535-536)
• Pages: 539-542
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.535-536.539
• Online since: January 2013
• Authors: M.A. Iqbal, G. Tiwari, P.K. Gupta
• Keywords: Layered Target, Ogive Nosed Projectile, Space Target, Span

References

[1] R. A. Westmann,. J. Math Physics. 43 (1964)) 191-198.

[2] G.R. Johnson, W.H. Cook, A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures, In: Proceedings of the seventh international symposium on Ballistics. The Hague; 1983.

[3] G.R. Johnson, W.H. Cook, Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures,Eng Fract Mech. 21(1985)31–48.

DOI: 10.1016/0013-7944(85)90052-9

[4] T.Borvik, A.H. Clausen, O.S. Hopperstad, M. Langseth, Perforation of AA5083-H116 aluminum plates with conical nosed steel projectiles – experimental study, Int J Impact Eng. 30(2004) 367–84.

DOI: 10.1016/s0734-743x(03)00072-1

[5] N.K. Gupta, M.A. Iqbal, G.S. Sekhon, Experimental and numerical studies on the behavior of thin aluminum plates subjected to impact by blunt- and hemispherical-nosed projectiles, International Journal of Impact Engineering. 32 (2006) 1921-1944.

DOI: 10.1016/j.ijimpeng.2005.06.007

[6] Version 6.7 ABAQUS analysis user's manual. 2 (2007).

[7] A. Arias, J.A. Rodrıguez-Martınez, A. Rusinek, Numerical simulations of impact behaviour of thin steel plates subjected to cylindrical, conical and hemispherical non-deformable projectiles, Eng Fract Mech .75(2008) 1635–56.

DOI: 10.1016/j.engfracmech.2007.06.005

[8] M.A. Iqbal, G. Gupta, N.K. Gupta, 3D numerical simulations of ductile targets subjected to oblique impact by sharp nosed projectiles, International Journal of Solids and Structures. 47 (2010) 224-237.

DOI: 10.1016/j.ijsolstr.2009.09.032

[9] E.A. Flores-Johnson, M. Saleh, L. Edwards, Ballistic performance of multi-layered metallic plates impacted by a 7.62-mm APM2 projectile. 38 (2011) 1022-1032.

DOI: 10.1016/j.ijimpeng.2011.08.005