A simple one-dimensional approach to modelling ceramic composite armour defeat

Abstract This work develops a simple set of models for the perforation of ceramic composite armour, which highlight the essential physical processes and illustrate approximately the dependency of ballistic resistance on physical properties and impact parameters. The major features of ceramic composite armour failure (viz. fracture conoid formation, dishing failure of thin backing plates, perforation of thick packing plates, and projectile erosion) are combined with a lumping of masses to treat material acceleration to produce simple models which allow computations on ceramic targets with both thin and thick metallic backings. Calculations are compared with a broad range of empirical data and are also used to discuss aspects of the interaction of penetrators with ceramic composite armours. The goos correlation of models with experiment demonstrates the usefulness of the present approach for studying ceramic composite armour defeat.

[1]  B. Lawn,et al.  On the theory of Hertzian fracture , 1967, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[2]  D. Tabor.  Hardness of Metals , 1937, Nature.

[3]  G. Taylor,et al.  THE FORMATION AND ENLARGEMENT OF A CIRCULAR HOLE IN A THIN PLASTIC SHEET , 1948 .

[4]  Joseph Sternberg,et al.  Material properties determining the resistance of ceramics to high velocity penetration , 1989 .

[5]  M. Mayseless,et al.  Impact on Ceramic Targets , 1987 .

[6]  Y. Yeshurun,et al.  THE DYNAMIC PROPERTIES OF TWO-PHASE ALUMINA/GLASS CERAMICS , 1988 .

[7]  Mark L. Wilkins,et al.  Computer Simulation of Penetration Phenomena , 1980 .

[8]  M. Meyers,et al.  Effect of stress state and microstructural parameters on impact damage of alumina-based ceramics , 1989 .

[9]  Michael V. Swain,et al.  Microfracture beneath point indentations in brittle solids , 1975 .

[10]  Michael V. Swain,et al.  Impact of small steel spheres on glass surfaces , 1977 .

[11]  Z. Rozenberg,et al.  The relation between ballastic efficiency and compressive strength of ceramic tiles , 1988 .

[12]  P. B. Mellor,et al.  Plasticity for mechanical engineers , 1962 .

[13]  S. L. Rice,et al.  Impact strength of materials , 1972 .

[14]  R. L. Woodward,et al.  Penetration of targets by flat-ended projectiles , 1976 .

[15]  P. Ostojic,et al.  A review of indentation fracture theory: its development, principles and limitations , 1987 .

[16]  R. Woodward.  Penetration of semi-infinite metal targets by deforming projectiles , 1982 .

[17]  B. Lawn,et al.  Indentation fracture: principles and applications , 1975 .

[18]  A. Tate,et al.  A theory for the deceleration of long rods after impact , 1967 .

[19]  F. Longy,et al.  Plasticity and Microcracking in Shock‐Loaded Alumina , 1989 .

[20]  Zvi Rosenberg,et al.  Hypervelocity penetration of ceramics , 1987 .

[21]  R. Woodward.  The penetration of metal targets by conical projectiles , 1978 .

[22]  Mark L. Wilkins,et al.  Mechanics of penetration and perforation , 1978 .

[23]  B. J. Baxter,et al.  Energy absorption in the failure of ceramic composite armours , 1989 .