TY - GEN
T1 - The ballistic impact response of flexible composite body armor
AU - Yavuz, A. K.
AU - Phoenix, S. Leigh
AU - Eken, S.
PY - 2016
Y1 - 2016
N2 - This paper presents results from an in-house, finite-difference (FD) code to model ballistic impact into flexible composite body armor. The code, written in MATLAB, runs well on a high-end PC. The version we consider in this paper models the postimpact, pre-failure behavior of non-woven, cross-plied sheets made from UHMWPE yarns (e.g., DSM Dyneema®) in a polyurethane matrix at low volume fraction. This version can also model crimp imprinted in an up-down diamond pattern. Possible projectiles are right-circular cylinders (RCC) and spheres, though we focus on the former in this paper. We first review some assumptions regarding the element structure of the model where a single sheet is treated as a flat 2-D network of discrete, pin-jointed yarns and each node represents a non-sliding, yarn crossing point. We then adapt this model to apply also to a much thicker panel and then present various results, in graphical form, to illustrate the richness in behavior that the model captures.
AB - This paper presents results from an in-house, finite-difference (FD) code to model ballistic impact into flexible composite body armor. The code, written in MATLAB, runs well on a high-end PC. The version we consider in this paper models the postimpact, pre-failure behavior of non-woven, cross-plied sheets made from UHMWPE yarns (e.g., DSM Dyneema®) in a polyurethane matrix at low volume fraction. This version can also model crimp imprinted in an up-down diamond pattern. Possible projectiles are right-circular cylinders (RCC) and spheres, though we focus on the former in this paper. We first review some assumptions regarding the element structure of the model where a single sheet is treated as a flat 2-D network of discrete, pin-jointed yarns and each node represents a non-sliding, yarn crossing point. We then adapt this model to apply also to a much thicker panel and then present various results, in graphical form, to illustrate the richness in behavior that the model captures.
UR - http://www.scopus.com/inward/record.url?scp=85013939937&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85013939937
T3 - Proceedings of the American Society for Composites - 31st Technical Conference, ASC 2016
BT - Proceedings of the American Society for Composites - 31st Technical Conference, ASC 2016
A2 - Davidson, Barry D.
A2 - Czabaj, Michael W.
A2 - Ratcliffe, James G.
PB - DEStech Publications Inc.
T2 - 31st Annual Technical Conference of the American Society for Composites, ASC 2016
Y2 - 19 September 2016 through 21 September 2016
ER -