Analysis of ballistic properties of layered targets using cavity expansion model

The ballistic resistance of multilayered targets was analyzed using the cylindrical cavity expansion approach. A mathematical model was formulated, which considers normal penetration of a rigid sharp impactor into a ductile target with a finite thickness and with air gaps. The model was used to determine the effect of the order of the plates in the target, the values of the air gaps, and the shape of the impactor on the ballistic resistance of the target.