Influence of side impacting dynamic armour components on long rod projectiles

• (LRP) before they hit the basic armour is a weight efficient way of in-creasing the protection of lighter vehicles. In this study, the effect of moving armour components, in the form of one or three cylindrical rods, hitting the side of the LRP, was investigated. The rods were hit-ting the side of the LRP at an angle of attack of 60 degrees. Rod ve-locities of 200 and 600 m/s and hitting points in the front and in the middle of the LRP were studied. The velocity of the LRP was 2000 m/s. The study is based on small scale reverse impact experiments and continuum dynamic simulations.To break the LRP, high rod velocities must be used. One rod hitting the LRP at 200 m/s gives approximately the same effect (some yaw but no fracture) as that of a moving oblique plate having the same ve-locity and angle of obliquity. Increasing the velocity of the rod to 600 m/s resulted in fracture of the LRP closely behind the hitting point both when hitting the front and the middle of the LRP. When using three rods, fracture was only obtained when the hitting points of the rods were closely spaced.

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