爆発成形における圧力波の伝ぱ機構 : 雷管のエネルギー効率

概要

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In the underwater explosive forming, in which pressure is controlled by changing the distance from an explosion source, there are two subjects that have to be solved for controlling the extent of forming of blank sheets. One of them is the pressure or energy of an explosion source, and another is the determination of the attenuation coefficient that represents the attenuation of pressure waves due to distance. If these values can be determined, the force and the energy acting on a blank sheet can be determined, consequently, the forecast and the control of the extent of forming become easy. The characteristic values of an explosion source are calculated with the simple estimation formulas which are expressed by the functions of only the initial density of its explosive. Moreover, the attenuation of pressure waves due to the distance from an explosion source to a blank sheet is determined with the empirical formula. Further, the pressure in the vicinity of an explosion source, of which the direct measurement is difficult, is estimated with this empirical formula.
社団法人精密工学会の論文
1993-11-05