scholarly journals Finite Element Modeling of Ballistic Impact on a Glass Fiber Composite Armor

2012 ◽  
Author(s):  
Dan M Davis
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Glass Fiber ◽  
Fiber Composite ◽  
Ballistic Impact ◽  
Element Modeling ◽  
Glass Fiber Composite ◽  
Composite Armor

Experimentally validated predictive finite element modeling of the V0-V100 probabilistic penetration response of a Kevlar fabric against a spherical projectile

2018 ◽  
Vol 9 (4) ◽  
pp. 504-524 ◽  
Author(s):  
Gaurav Nilakantan
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Finite Element Modeling ◽  
Element Model ◽  
Ballistic Impact ◽  
Impact Testing ◽  
Woven Fabric ◽  
Projectile Impact ◽  
Element Modeling ◽  
The Impact

This work presents the first fully validated and predictive finite element modeling framework to generate the probabilistic penetration response of an aramid woven fabric subjected to ballistic impact. This response is defined by a V0-V100 curve that describes the probability of complete fabric penetration as a function of projectile impact velocity. The exemplar case considered in this article comprises a single-layer, fully clamped, plain-weave Kevlar fabric impacted at the center by a 0.22 cal spherical steel projectile. The fabric finite element model comprises individually modeled three-dimensional warp and fill yarns and is validated against the experimental material microstructure. Sources of statistical variability including yarn strength and modulus, inter-yarn friction, and precise projectile impact location are mapped into the finite element model. A series of impact simulations at varying projectile impact velocities is executed using LS-DYNA on the fabric models, each comprising unique mappings. The impact velocities and outcomes (penetration, non-penetration) are used to generate the numerical V0-V100 curve which is then validated against the experimental V0-V100 curve obtained from ballistic impact testing and shown to be in excellent agreement. The experimental data and its statistical analysis used for model input and validation, namely, the Kevlar yarn tensile strengths and moduli, inter-yarn friction, and fabric ballistic impact testing, are also reported.

Finite element modeling of ballistic impact on multi-layer Kevlar 49 fabrics

2014 ◽  
Vol 56 ◽  
pp. 254-262 ◽  
Author(s):  
Deju Zhu ◽  
Aditya Vaidya ◽  
Barzin Mobasher ◽  
Subramaniam D. Rajan
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Ballistic Impact ◽  
Element Modeling
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