Effect of air gaps on ballistic resistance of targets for conical impactors

Numerical investigation on ballistic resistance of aluminium multi-layered panels impacted by improvised projectiles

“…They found that the width of the air gap between the layers had no effect on the resistance of target for the conical-nosed impactors. In the corresponding paper [5] it was concluded that the increase in the width of the air gaps and the increase in the number of layers raised the ballistic limit velocity of the target (understood as the velocity required for a projectile to penetrate a particular piece of material). The effect of air gaps upon ballistic properties of the shield was further discussed in [6], where the authors concluded that for the non-conical shape of the projectile changes in the ballistic limit velocity were in the range of several per cent.…”

Effect of air gaps on the ballistic resistance of ductile shields perforated by nonconical impactors

“…In [Ben-Dor et al 1998b;1998a;1999], we studied analytically the influence of air gaps between the plates on the ballistic limit velocity (BLV) of a multilayered shield. Using the general localized interaction model (LIM).…”

“…Using the cylindrical cavity expansion model, we studied in [Ben-Dor et al 1998a] the effect of air gaps on the ballistic performance of a spaced shield comprising plates manufactured from the same material and found that the BLV of the shield slightly increased with the increase of the widths of air gaps. In this study we investigate the effect of air gaps on ballistic properties of shields against nonconical impactors.…”

Effect of the order of plates on the ballistic resistance of ductile layered shields perforated by nonconical impactors

“…Ben- Dor et al [1998b;1998a;1999b;1999a;2000;2006a] studied analytically the influence of air gaps between the plates and the order of plates on the BLV of a multilayered shield against conicalshaped impactors, and the results are summarized in [Ben-Dor. et al 2006a].…”