On the optimal nose geometry for a rigid penetrator, including the effects of pressure-dependent friction

In a related paper (Jones et al., Comput Mech, 1998;22:413) the problem of maximizing the depth of penetration by a normally impacting cylindrical projectile by optimizing the nose geometry was considered. These results were accomplished by neglecting any frictional resistance offered by the target and only considering the normal pressure acting against the penetrator nose. The problem of maximizing the penetration depth achieved by the normal impact of a cylindrical projectile including the effects of friction acting on the penetrator nose is a much more challenging problem. In this paper, the normal impact and penetration problem is considered including the effects of pressure-dependent friction.