Blast and Fragment Containment Capability of Portable Chambers
Final rept. 7 Feb 1974-8 Sep 1975
BATTELLE COLUMBUS DIV OH
Pagination or Media Count:
It was found that a 2-inch annulus of sand surrounding a C-4-filled, 2-inch-diameter pipe was sufficient to prevent the formation of fragment craters on the inside of a blastfragment containment chamber. This fragment restraint system was demonstrated in a series of explosive tests in a 2-foot-diameter, 0. 5-inch-wall, spherical blast containment chamber designed and fabricated for this investigation. It was also found that bare cylindrical charge shapes lead to greater local strains in a spherical vessel in the plane normal to the charge axis than equal weight spherical charges, while the metal- and sand-encased charges produced even greater plastic deformation of the containment vessel. The complete results of the fragment restraint studies, and a series of 10 explosive containment experimental shots are given. An analytical model for the elastic- plastic deformation of the chamber showed good agreement with that observed for the bare spherical charges fired in the chamber.
- Ammunition and Explosives