Title

Effect of Explosive Charge Geometry on Shockwave Propagation

Abstract

The shape of an explosive charge has an effect on the shock wave propagation. Several efforts have been made to model the shock wave from a high explosive detonation. Due to the rapid rate and high variability of a detonation reaction the characteristics of detonation are difficult to predict accurately. Detonation of 15 PETN-based primasheet charges in the spherical, cubic, cylindrical, and tetrahedral configurations have been examined in this study. Qualitative data was collected through the use of high-speed photography to examine the shockwave and fireball production macroscopically. Quantitative pressure data was collected in the near and far field of the detonation reaction using free-field pressure probes, recording data both normal to charge faces as well as along charge vertices. In the near field a lower pressure zone is created along charge vertices. In the far field, pressures along these bisecting axes increase as the shock front from adjacent facets intersect. These results shed a new light on the effect an explosive charges shape has on its ability to perform work on its surroundings. This paper will describe the methodology and findings of this study as well as examine the causality and implications of its results on our understanding of the detonation phenomena.

Meeting Name

44th Annual Conference on Explosives and Blasting Technique (2018: Jan. 28-31, San Antonio, TX)

Department(s)

Mining and Nuclear Engineering

Second Department

Geosciences and Geological and Petroleum Engineering

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2018 International Society of Explosive Engineers (ISEE), All rights reserved.

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