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CONCERNING THE EMISSION OF AN ELASTIC WAVE FROM A SPHERICAL UNDERGROUND EXPLOSION

N.V. Zvolinskii-1960-01-01-OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)
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TL;DRAbstract

The flow of a plastic medium into an incompressible state under the influence of an explosion is investigated. The propagation of the detonating wave and the release of the elastic wave are examined. Spherical symmetry is assumed while the work involved in the transformation of the plastic state into an incompressible condition is taken to be proportional to the change in the maximum displacement. The detonating wave propagation is pictured as occurning ir four stages. First, the shock wave propagates itself through the undisturbed medium. Next, the elastic wave is propagated through the undisturbed medium; followed by a zone of packing. Third, plastic flow continues but the packing of the medium stops. Finally, as the zone of packing is stopped the rear of the elastic wave is severed from it and the elastic wave goes off to infiniiy. Each of the stages is discussed but numerical calculations are not presented. The kinematic propagation is illustrated qualitatively by a diagram. (TTT)

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The flow of a plastic medium into an incompressible state under the influence of an explosion is investigated. The propagation of the detonating wave and the release of the elastic wave are examined. Spherical symmetry is assumed while the work involved in the transformation of the plastic state into an incompressible condition is taken to be proportional to the change in the maximum displacement. The detonating wave propagation is pictured as occurning ir four stages. First, the shock wave propagates itself through the undisturbed medium. Next, the elastic wave is propagated through the undisturbed medium; followed by a zone of packing. Third, plastic flow continues but the packing of the medium stops. Finally, as the zone of packing is stopped the rear of the elastic wave is severed from it and the elastic wave goes off to infiniiy. Each of the stages is discussed but numerical calculations are not presented. The kinematic propagation is illustrated qualitatively by a diagram. (TTT)

Keywords

MechanicsShock waveCompressibilityWave propagationPhysicsDisplacement (psychology)Blast waveWork (physics)

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