| || Penetration of projectiles in composite laminates
Author : Patel, B. P.;Bhola, S. K.;Ganapathi, M.;Makhecha, D. P.
Source : Defence Science Journal ; Vol:54(2) ; 2004 ; pp 151-159
Subject : 531.55 Projectiles;623.4 Armaments and Ballistics;678 Composite Materials
Keywords : Composite laminates;Penetration phenomenon;FSDT;First order shear deformation theory;Projectiles;Target plates;Ballistic limit;Advanced composite materials;Composite materials;Composite armour;Shear;Deformation
Abstract : This paper deals with the prediction of the penetration phenomenon of a cylindro conical impactor on the Kevlar/epoxy laminated composites using C0 eight-noted serendipity quadrilateral finite element based on first-order shear deformation theory (FSDT). Local as well as global deformations during impact is considered in the evaluation of indentation, penetration and perforation phases. Local strains during impact have been evaluated using the hypothesis made from the available experimental observations of bulging during penetration. A detailed parametric study, considering various projectiles and target plate variables, has been carried out to find their effect on the response of the plate, and ballistic parameters, such as ballistics limit and absorbed energy.