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Interactions of inert confiners with explosives

机译：惰性密闭容器与炸药的相互作用

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The deformation of an inert confiner by a steady detonation wave in an adjacent explosive is investigated for cases where the confiner is sufficiently strong (or the explosive sufficiently weak) such that the overall change in the sound speed of the inert is small. A coupling condition which relates the pressure to the deflection angle along the explosive-inert interface is determined. This includes its dependence on the thickness of the inert, for cases where the initial sound speed of the inert is less than or greater than the detonation speed in the explosive (supersonic and subsonic inert flows, respectively). The deformation of the inert is then solved by prescribing the pressure along the interface. In the supersonic case, the detonation drives a shock into the inert, subsequent to which the flow in the inert consists of alternating regions of compression and tension. In this case reverberations or 'ringing' occurs along both the deflected interface and outer edge of the inert. For the subsonic case, the flow in the interior of the inert is smooth and shockless. The detonation in the explosive initially deflects the smooth interface towards the explosive. For sufficiently thick inerts in such cases, it appears that the deflection of the confiner would either drive the detonation speed in the explosive up to the sound speed of the inert or drive a precursor wave ahead of the detonation in the explosive. Transonic cases, where the inert sound speed is close to the detonation speed, are also considered. It is shown that the confinement affect of the inert on the detonation is enhanced as sonic conditions are approached from either side.
机译：在密闭器足够坚固（或爆炸物足够弱）以使惰性气体声速的总体变化较小的情况下，研究相邻爆炸物中稳定的爆炸波引起的惰性密闭器的变形。确定将压力与沿着炸药-惰性界面的偏转角相关的耦合条件。对于惰性气体的初始声速小于或大于炸药中爆炸速度（分别为超音速和亚音速惰性流）的情况，这包括其对惰性气体厚度的依赖性。然后通过规定沿界面的压力来解决惰性气体的变形。在超音速情况下，爆炸将冲击带入惰性气体，随后惰性气体中的流动由压缩和拉伸的交替区域组成。在这种情况下，偏转的界面和惰性气体的外边缘都会发生混响或“响”。对于亚音速情况，惰性气体内部的流动是平稳且无冲击的。炸药中的爆炸起初使光滑的界面向炸药偏转。在这种情况下，对于足够厚的惰性气体而言，似乎限制器的偏转将驱使炸药中的爆轰速度提高到惰性气体的声速，或者驱使炸药中的爆轰之前的前驱波。还考虑了跨音速情况，其中惰性声速接近爆炸速度。结果表明，当从任一侧接近声波条件时，惰性气体对爆轰的限制作用都会增强。

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