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A Numerical Study on High Velocity Impact Behavior of Titanium Based Fiber Metal Laminates

1
School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore
2
National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China
*
Author to whom correspondence should be addressed.
J. Compos. Sci. 2018, 2(4), 62; https://doi.org/10.3390/jcs2040062
Received: 13 August 2018 / Revised: 12 October 2018 / Accepted: 16 October 2018 / Published: 22 October 2018
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Abstract

The present paper gives details of the structural response of titanium-based fiber metal laminates (TFML) subjected to high velocity impact. Dynamic perforation behavior of two different sample configurations, TFML-2/1 and 3/2 are presented. The behavior of the metal and composite layer is defined using two independent appropriate constitutive material models. Both experimental and numerically predicted residual velocity follows the Recht-Ipson model variation with impact velocity. Being larger in thickness, residual velocity, peak contact force and total energy absorbed were found to be larger for TFML-3/2 than 2/1. However, the contact duration was rather insignificantly affected. Having similar metal volume fraction (MVF), energy dissipated by means of plastic deformation of metal layers was found to be constant for both TFML configurations that were considered. The axisymmetric loading, boundary conditions and having balanced material property distribution along the principle axes resulted in doubly symmetric damage surfaces, both layer-wise and overall. The developed finite element (FE) model adequately simulated the contact behavior and all of the experimentally realized damage modes in the metal and composite layers and confirmed its reliability. Having limited experimental information, the obtained numerical information allows one to briefly understand the dynamic perforation behavior of TFML laminates. View Full-Text
Keywords: fiber metal laminates; finite element model; multi continuum theory; ballistic impact; projectile velocity fiber metal laminates; finite element model; multi continuum theory; ballistic impact; projectile velocity
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Chai, G.B.; Manikandan, P.; Li, X. A Numerical Study on High Velocity Impact Behavior of Titanium Based Fiber Metal Laminates. J. Compos. Sci. 2018, 2, 62.

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