The propagation of detonation waves in non-ideal condensed-phase explosives confined by high sound-speed materials

摘要: Highly non-ideal condensed-phase explosives used by the mining industry have a strong detonation velocity dependence on charge dimension. Detonation velocities can be as low one third of theoretically calculated ideal in radii close to failure radius. Under these conditions flow confiner become subsonic, condition under which classical shock-polar analysis is not applicable. This restriction prohibits use popular engineering models like shock dynamics and Wood-Kirkwood type confinement conditions. In addition, it has been found literature that subsonic will increase influence confining material performance. this work, we multi-phase model coupled an elastic-plastic (for representation confiner) explore interaction detonations An ammonium nitrate based emulsion investigated aluminium steel finite infinite thickness representing either fluid or material. It presence elastic waves negligible conditions, but important radius with confiner. High sound-speed confiners support through energy transport ahead front if desensitisation effects are negligible. The profiles remain convex even most curvature only becomes concave localised region edge.