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Title: Finite-element modeling of the ballistic impact of fabric armor
Authors: Lim, C.T. 
Shim, V.P.W. 
Ng, Y.H.
Keywords: Ballistic impact
Dynamic material model
Energy absorption
Fabric armor
Finite-element modeling
Issue Date: Jan-2003
Citation: Lim, C.T., Shim, V.P.W., Ng, Y.H. (2003-01). Finite-element modeling of the ballistic impact of fabric armor. International Journal of Impact Engineering 28 (1) : 13-31. ScholarBank@NUS Repository.
Abstract: This paper investigates the finite-element simulation of ballistic impact on Twaron® fabric through proposing a material model, which incorporates viscoelasticity and a strain-rate-sensitive failure criterion. A non-linear, explicit, three-dimensional finite-element code DYNA3D is used to simulate the response of fabric under high-speed projectile impact. The fabric is modeled using membrane elements. Suitable material properties to account for its viscoelastic nature are obtained through mathematical manipulation of the three-element spring-dashpot model and by use of available experimental data. The ballistic limit, residual velocity, energy absorption and transverse deflection profiles of the fabric are predicted and compared with those from experiment. The limitations of the proposed model, in terms of representing fabric behavior such as frictional effects between yarns and unraveling and fraying of yarns are recognized. Nevertheless, the model provides a fairly accurate representation of the strain-rate-dependent behavior of fabric. © 2002 Elsevier Science Ltd. All rights reserved.
Source Title: International Journal of Impact Engineering
ISSN: 0734743X
DOI: 10.1016/S0734-743X(02)00031-3
Appears in Collections:Staff Publications

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