Failure pattern in ceramic metallic target under ballistic impact

作     者：M.A.Iqbal M.K.Khan 

作者机构：Department of Civil EngineeringIndian Institute of Technology RoorkeeRoorkee 247667India Department of Civil EngineeringAligarh Muslim UniversityAligarh202002India 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2024年第40卷第10期

页      面：173-190页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Ballistic resistance Bi-layer target Ceramic metal armour Multi-hit impact Finite element modelling 

摘      要：The ballistic resistance and failure pattern of a bi-layer alumina 99.5%-aluminium alloy 1100-H12 target against steel 4340 ogival nosed projectile has been explored in the present experimental cum numerical *** the experimental investigation,damage induced in the ceramic layer has been quantified in terms of number of cracks developed and failure zone *** resultant damage in the backing layer has been studied with variation in the bulge and perforation hole in the backing layer with the varying incidence *** discussion of the experimental results has been further followed by three dimensional finite element computations using ABAQUS/Explicit finite code to investigate the behaviour of different types of bi-layer targets under multi-hit projectile *** JH-2 constitutive model has been used to reproduce the behaviour of alumina 99.5%and JC constitutive model has been used for steel 4340 and aluminium alloy *** total energy dissipation has been noted to be of lesser magnitude in case of sub-sequential impact in comparison to simultaneous impact of two *** distance between the impact points of two projectiles also effected the ballistic resistance of bi-layer *** ballistic resistance of single tile ceramic front layer and four tile ceramic of equivalent area found to be dependent upon the boundary conditions provided to the target.