The Pyramid Liner Concept

A shaped charge device was designed from a charge with a four-sided pyramid as the liner. Devices of this nature were first studied by Geiger and Honcia in 1977 and relegated to the area of interesting concepts, but without application. The current study represents probably the first numerical simulations of this charge, including parametric variations of the altitude of the pyramid and the initiation mode of the explosive. The numerical simulations were performed using the CTH hydrocode (shock physics code) developed by Sandia National Laboratories. The liner was made of copper, and the wall thickness of each isosceles triangle comprising the pyramid was identical. The multiple interacting jets provide a wide area of coverage that implies that the device may be useful as a multidirectional cutting charge. A multidirectional charge may be useful for certain applications in the mining, oil well completion, demolition, or military fields.