International Journal of Vehicle Structures and Systems

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Ballistic Impact Perforation into GLARE Targets:Experiment, Numerical Modelling and Investigation of Aluminium Stacking Sequence


Affiliations
1 Impact and Explosion Lab., Mechanical Engineering Dept., Tarbiat Modares University, Tehran, Iran, Islamic Republic of
     

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Experimental investigation of high velocity perforation of 2/1 and 3/2 GLARE 3 target panels with flat ended projectile was presented. Also, numerical simulations were carried out using explicit nonlinear finite element software, LS-DYNA, considering strain rate hardening effects. The ballistic limit was determined experimentally and numerically. Some GLARE 3/2 laminates with different Aluminium thickness is considered. The Aluminium thickness varies in frontal, medial and distal layers of GLARE, while the thickness of glass/epoxy layers is constant, and the ballistic limit and absorbed energy of each GLARE target is determined numerically. Specific absorbed energy is defined as goal function and should be maximized. The laminate with maximum specific absorbed energy is determined. In addition, energy absorbing portion of each layer is determined. There is a reasonable agreement between numerical and experimental results.

Keywords

Fiber Metal Laminates (FMLs), Glare, Ballistic Impact, Finite Elements Method (FEM), LS-DYNA, Stacking Sequence Investigation.
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  • Ballistic Impact Perforation into GLARE Targets:Experiment, Numerical Modelling and Investigation of Aluminium Stacking Sequence

Abstract Views: 265  |  PDF Views: 2

Authors

Hadi Sabouri
Impact and Explosion Lab., Mechanical Engineering Dept., Tarbiat Modares University, Tehran, Iran, Islamic Republic of
Hamed Ahmadi
Impact and Explosion Lab., Mechanical Engineering Dept., Tarbiat Modares University, Tehran, Iran, Islamic Republic of
Gholam H. Liaghat
Impact and Explosion Lab., Mechanical Engineering Dept., Tarbiat Modares University, Tehran, Iran, Islamic Republic of

Abstract


Experimental investigation of high velocity perforation of 2/1 and 3/2 GLARE 3 target panels with flat ended projectile was presented. Also, numerical simulations were carried out using explicit nonlinear finite element software, LS-DYNA, considering strain rate hardening effects. The ballistic limit was determined experimentally and numerically. Some GLARE 3/2 laminates with different Aluminium thickness is considered. The Aluminium thickness varies in frontal, medial and distal layers of GLARE, while the thickness of glass/epoxy layers is constant, and the ballistic limit and absorbed energy of each GLARE target is determined numerically. Specific absorbed energy is defined as goal function and should be maximized. The laminate with maximum specific absorbed energy is determined. In addition, energy absorbing portion of each layer is determined. There is a reasonable agreement between numerical and experimental results.

Keywords


Fiber Metal Laminates (FMLs), Glare, Ballistic Impact, Finite Elements Method (FEM), LS-DYNA, Stacking Sequence Investigation.



DOI: https://doi.org/10.4273/ijvss.3.3.05