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An energy-based model for ballistic impact analysis of ceramic-composite armors

DSpace at IIT Bombay

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Title An energy-based model for ballistic impact analysis of ceramic-composite armors
 
Creator NAIK, NK
KUMAR, S
RATNAVEER, D
JOSHI, M
AKELLA, K
 
Subject ceramic-composite armor
ballistic impact
fracture
energy-based model
ballistic limit velocity
damage mechanisms
WOVEN FABRIC COMPOSITES
NUMERICAL-SIMULATION
THICK COMPOSITES
PERFORATION
PENETRATION
BEHAVIOR
DAMAGE
PROJECTILE
FAILURE
FORMULATION
 
Description An analytical model is presented for the ballistic impact behavior of ceramic-composite armors. The model is based on wave theory and energy balance between the kinetic energy of the projectile and the energy absorbed by different mechanisms. The armor analyzed consists of front composite cover layer, ceramic plate, rubber layer and the composite backing plate. The projectile is cylindrical. The major damage and energy-absorbing mechanisms are compression of the target directly below the projectile, compression in the surrounding region around the point of impact, formation of ring cracks and radial cracks in the ceramic leading to tensile failure, shear plugging, pulverization of the ceramic, tension in the yarns, delamination and matrix cracking in the composite, bulge formation on the back face of the composite backing plate and friction between the target and the projectile. Projectile erosion and deformation are also considered. Kinetic energy, velocity and deceleration of the projectile, distance traveled by the projectile and the contact force are presented as a function of time. Ballistic limit velocity, contact duration and damage progression are also given. Further, solution procedure is presented for the study of ballistic impact behavior of ceramic-composite armors. Analytical predictions are validated with the experimental results. Finally, performance of a typical ceramic-composite armor is presented.
 
Publisher SAGE PUBLICATIONS LTD
 
Date 2014-10-15T14:26:32Z
2014-10-15T14:26:32Z
2013
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF DAMAGE MECHANICS, 22(2)145-187
http://dx.doi.org/10.1177/1056789511435346
http://dspace.library.iitb.ac.in/jspui/handle/100/15099
 
Language en