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Title: Characterization and constitutive modeling of aramid fibers at high strain rates
Authors: Tan, V.B.C. 
Zeng, X.S. 
Shim, V.P.W. 
Keywords: Aramid yarns
Ballistic impact
Constitutive modeling
High strain rate
Split Hopkinson Pressure Bar test
Issue Date: Nov-2008
Citation: Tan, V.B.C., Zeng, X.S., Shim, V.P.W. (2008-11). Characterization and constitutive modeling of aramid fibers at high strain rates. International Journal of Impact Engineering 35 (11) : 1303-1313. ScholarBank@NUS Repository.
Abstract: The quasi-static and rate-dependent mechanical properties of aramid yarns are presented together with a study on different methods of securing yarn specimens in tensile tests. While capstans were found to be suitable for quasi-static tests, they either were not strong enough or had too high inertia for dynamic tests in a Split Hopkinson Pressure Bar setup. Instead, specially designed clamps were used. A viscoelastic material model to describe the mechanical behavior of the yarns, including failure, is also presented. The material model was employed in the computational simulation of ballistic penetration of woven aramid fabrics. Comparison of the simulations and actual ballistic tests showed that predictions of the energy absorbed by the fabric were in good agreement with the experiments. © 2007 Elsevier Ltd. All rights reserved.
Source Title: International Journal of Impact Engineering
ISSN: 0734743X
DOI: 10.1016/j.ijimpeng.2007.07.010
Appears in Collections:Staff Publications

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