Analysis of fragmentation and brisance characteristics of new explosive compositions using the Russian Standard Fragmenting Cylinder no. 12
Authors: Barmin A.V., Pechenev Yu.G., Odintsov V.A., Imkhovik N.A., Machneva I.P.
Published in issue: #8(80)/2018
DOI: 10.18698/2308-6033-2018-8-1795
Category: Mechanics | Chapter: Mechanics of Deformable Solid Body
We analysed the results of statistical processing of fragment masses obtained in testing closed-end standard fragmenting cylinders no. 12 (RSFС — Russian Standard Fragmenting Cylinder) filled with the following explosive materials: four standard types and eight newly developed by the JSC State scientific research institute Kristall (four castable and four cold-pressed compositions). RSFC casings were manufactured from the C60 and 80G2S steels by lathing and stamping. We used the following combinations of steel and explosive to discuss the specifics of statistical fragment mass processing for the RSFC no. 12 according to a new fragmentation spectrum processing technique, the Odintsov method (patent no. 2362968RU): C60 — GASS-8 and C60 — GASS-12. We analysed the correlations between two main mass and numerical fragmentation spectrum characteristics of the no. 12 RSFС stamped out of normalised artillery shell steel C60 and eutectoid steel 80G2S, and the following explosive composition properties: detonation velocity, Chapman—Jouguet pressure and shell expansion rate — according to the T-20 technique. We determined that there exist these very close associations between expansion speed of a copper cylindrical shell and the number of fragments of mass more than 0,25 gram, as well as between expansion speed of a copper cylindrical shell and mass fraction of fragment (correlation coefficient r equals or is more than 0,94), which indicates that the dependence between acceleration potential and brisance of explosive compositions is close to being a function
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