On the calibration of some ideal and non-ideal explosives

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

Holman, Steven B. ; Stewart ; Donald S.

关键词: detonation;    detonation shock dynamics;    pbx 9501;    pbx 9502;    pbx n111;    IM-1;    pbx n9;    reaction zone;    DSDTOOLS;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/18586/Holman_Steven.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

The initial portion of this work will expound a concise, albeit limited, introduction to energeticmaterials, from their background and the reasons they are studied to the moderndevelopments used in the work of this thesis. Today there are several reason why thesematerials 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 somecurrent uses of these materials it is clear that they will be around for some time. Thereforesafety in handling, storage and transportation is of paramount importance. It would alsobe remiss to neglect the beneficial uses these materials have in applications such as miningand construction, propulsion, avalanche control, and a myriad of other uses.This thesis will predominantly present two main issues, the characterization of severalenergetic materials and a parameter study for the effects of model equation of state parameterson the behavior of a detonating process. To do this not only required background inthe mathematical modeling but also the physical foundation of the material, through theirequations of state. These were largely based on the prior work of W. C. Davis but havebeen added to significantly by many people, as mentioned later. The reaction rate lawspresent also had their roots in earlier work. This is especially true for the modified Ignitionand Growth (I&G) model, largely developed by members of the D. S. Stewart group at theUniversity of Illinois in Urbana-Champaign. Prominent notable research is also presentedalong the way that either provides much of the necessary background or as a source ofthe data used to produce the outcome of this thesis. Additionally, a very brief descriptionof some of the experimental procedures for collecting data are discussed, as well as theiriiinterplay with certain theoretical models. The effective modeling of these materials wouldnot have been possible without a synergy between theoretical, numerical and experimentalaspects.Finally the calibrations of various explosives are presented. It is through these materialsthat the effectiveness of the models is determined, as it is required that the models reproducewell the experimental data. Many of these experimental characteristics that were measuredin 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 materialsbecome more transparent. The calibration process was necessary to see which materialsare insensitive, which are initiated to detonation upon impact quickest, and several othercharacteristics that manifest themselves through the calibration procedures.