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Composites: Mechanics, Computations, Applications: An International Journal
ESCI SJR: 0.354 SNIP: 0.655 CiteScore™: 1.2

ISSN Imprimer: 2152-2057
ISSN En ligne: 2152-2073

Composites: Mechanics, Computations, Applications: An International Journal

DOI: 10.1615/CompMechComputApplIntJ.v4.i2.20
pages 113-121

FINITE-ELEMENT SIMULATION OF THE BEHAVIOR OF PERFORATION IN FIBER−METAL LAMINATES

Uzair Ahmed Dar
School of Mechanical Engineering, Northwestern Polytechnical University Xi'an, Shaanxi, China; Faculty of Mechanical Engineering GIK Institute of Engineering Sciences and Technology, Pakistan

RÉSUMÉ

Fiber−metal laminates (FML) are hybrid materials based on different stacking configurations of thin metal and reinforced fiber epoxy layers. These materials have benefits of lower areal density and higher impact energy absorption. The energy is absorbed in these layered structures through plastic deformation and tearing of metal in addition to delamination and fiber fracture of composite layers. The perforation failure of the aluminum/glass fiber-based FML has been numerically investigated in this work. It is found that the geometry of the projectile has a significant effect on the energy required to perforate a certain FML configuration. The perforation of FML impacted by a rigid projectile of varying geometry is modeled by using commercial finite-element analysis code AN SYS AUTODYN. The numerical model is first validated with published experimental results and then extended to different projectile geometries. Numerical simulations are carried out with projectiles of conical, hemispherical, and ogival geometries. The results showed that conical projectiles with a smaller cone angle and ogival projectiles require significantly less energy to perforate certain FML than hemispherical and larger cone angle projectiles. Moreover, the projectile diameter, cone angle, truncated and tip diameters are the other important parameters in determining the perforation energy for FML structures.


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