On the calibration of some ideal and non-ideal explosives

Holman, Steven B.

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Description

Title

On the calibration of some ideal and non-ideal explosives

Author(s)

Holman, Steven B.

Issue Date

2011-01-21T22:50:47Z

Director of Research (if dissertation) or Advisor (if thesis)

Stewart, Donald S.

Department of Study

Mechanical Sci & Engineering

Discipline

Theoretical & Applied Mechans

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

• detonation
• detonation shock dynamics
• pbx 9501
• pbx 9502
• pbx n111
• IM-1
• pbx n9
• reaction zone
• DSDTOOLS

Abstract

The initial portion of this work will expound a concise, albeit limited, introduction to energetic materials, from their background and the reasons they are studied to the modern developments used in the work of this thesis. Today there are several reason why these materials are studied. The immense amount of chemical energy present in these materials, if harnessed appropriately, would be greatly beneficial to people and society. Due to some current uses of these materials it is clear that they will be around for some time. Therefore safety in handling, storage and transportation is of paramount importance. It would also be remiss to neglect the beneficial uses these materials have in applications such as mining and construction, propulsion, avalanche control, and a myriad of other uses. This thesis will predominantly present two main issues, the characterization of several energetic materials and a parameter study for the effects of model equation of state parameters on the behavior of a detonating process. To do this not only required background in the mathematical modeling but also the physical foundation of the material, through their equations of state. These were largely based on the prior work of W. C. Davis but have been added to significantly by many people, as mentioned later. The reaction rate laws present also had their roots in earlier work. This is especially true for the modified Ignition and Growth (I&G) model, largely developed by members of the D. S. Stewart group at the University of Illinois in Urbana-Champaign. Prominent notable research is also presented along the way that either provides much of the necessary background or as a source of the data used to produce the outcome of this thesis. Additionally, a very brief description of some of the experimental procedures for collecting data are discussed, as well as their ii interplay with certain theoretical models. The effective modeling of these materials would not have been possible without a synergy between theoretical, numerical and experimental aspects. Finally the calibrations of various explosives are presented. It is through these materials that the effectiveness of the models is determined, as it is required that the models reproduce well the experimental data. Many of these experimental characteristics that were measured in the lab are also recreated, along side simulated data, in the software tool DSDTOOLS . Through the course of calibrating these materials, the differing aspects of these materials become more transparent. The calibration process was necessary to see which materials are insensitive, which are initiated to detonation upon impact quickest, and several other characteristics that manifest themselves through the calibration procedures.

Graduation Semester

2010-12

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http://hdl.handle.net/2142/18586

Copyright and License Information

Copyright 2010 Steven B. Holman

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