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Author: Jaimin Lee
Publisher:
ISBN:
Category : Detonation waves
Languages : en
Pages : 154
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Book Description
Author: Jaimin Lee
Publisher:
ISBN:
Category : Detonation waves
Languages : en
Pages : 154
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 308
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Book Description
This document is a final report that summarizes the research findings and research activities supported by the subcontract DOE-LANL-9-XG8-3931P-1 between the University of Illinois (D.S. Stewart Principal Investigator) and the University of California (Los Alamos National Laboratory, M-Division). The main focus of the work has been on investigations of Detonation Shock Dynamics. A second emphasis has been on modeling compaction of energetic materials and deflagration to detonation in those materials. The work has led to a number of extensions of the theory of Detonation Shock Dynamics (DSD) and its application as an engineering design method for high explosive systems. The work also enhanced the hydrocode capabilities of researchers in M-Division by modifications to CAVEAT, an existing Los Alamos hydrocode. Linear stability studies of detonation flows were carried out for the purpose of code verification. This work also broadened the existing theory for detonation. The work in this contract has led to the development of one-phase models for dynamic compaction of porous energetic materials and laid the groundwork for subsequent studies. Some work that modeled the discrete heterogeneous behavior of propellant beds was also performed. The contract supported the efforts of D.S. Stewart and a Postdoctoral student H.I. Lee at the University of Illinois.
Author:
Publisher: Elsevier
ISBN: 0080530915
Category : Science
Languages : en
Pages : 475
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Book Description
This volume provides an overview of current research and recent advances in the area of energetic materials, focusing on explosives and propellants. The contents and format reflect the fact that theory, experiment and computation are closely linked in this field. The challenge of developing energetic materials that are less sensitive to accidental stimuli continues to be of critical importance. This volume opens with discussions of some determinants of sensitivity and its correlations with various molecular and crystal properties. The next several chapters deal in considerable detail with different aspects and mechanisms of the initiation of detonation, and its quantitative description. The second half of this volume focuses upon combustion. Extensive studies model ignition and combustion, with applications to different propellants. The final chapter is an exhaustive computational treatment of the mechanism and kinetics of combustion initiation reactions of ammonium perchlorate. Overall, this volume illustrates the progress that has been made in the field of energetic materials and some of the areas of current activity. It also indicates the challenges involved in characterizing and understanding the properties and behaviour of these compounds. The work is a unique state-of-the-art treatment of the subject, written by pre-eminent researchers in the field. - Overall emphasis is on theory and computation, presented in the context of relevant experimental work - Presents a unique state-of-the-art treatment of the subject - Contributors are preeminent researchers in the field
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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Book Description
This report summarizes the activities of a 3-year grant and 6 month extension supported by the Air Force Office of Scientific Research. The main topics covered by our investigations, are described succinctly as: (1) Complexity and meso-scale investigations of condensed explosive and reactive materials that include dynamical interaction of reactive flow at the scale of the microstructure of the material. We developed concepts related to the multi-scale statistical design of high energy density materials and specific modeling approaches required to described metal loaded, condensed phase explosives, with a reduced detonation theories. (2) Theory and simulation for porous energetic explosives and multiphase reactive materials. This included asymptotic derivation of a theory of detonation shock dynamics for a porous energetic materials, and the development of entirely new models that can be used to describe non-classical detonation phenomena observed in reactive materials (sometime referred to as 'solid state detonation'.) (3) Linear and nonlinear theory for stability of detonations, formulated in the shock attached frame. The grant also supported the completion of two comprehensive review articles on detonation stability theory and detonation shock dynamics.
Author: Thomas B. Brill
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 478
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Book Description
Energetic materials are distinguished from other materials primarily by the fact that rapid, exothermic reactions can be induced with the release of gaseous products. This complex phenomenon cuts across many boundaries of chemistry (synthesis, kinetics, thermodynamics, spectroscopy, quantum and molecular dynamics calculations, etc.) and engineering physics (shock and detonation waves, hydrodynamics, fracture and solid mechanics, defects, etc.). This volume offers the latest chemistry advancements in understanding the complex dynamic processes in these materials in the condensed phase. The focus is on fundamental research into the rates and pathways of rapid exothermic reactions, product specification, diagnostic methods, molecular processes of energy transfer, and molecular processes at extreme pressure and temperature. Many novel materials are discussed.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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Book Description
Author: Dabir S. Viswanath
Publisher: Springer
ISBN: 9402412018
Category : Science
Languages : en
Pages : 477
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Book Description
This book summarizes science and technology of a new generation of high-energy andinsensitive explosives. The objective is to provide professionals with comprehensiveinformation on the synthesis and the physicochemical and detonation properties ofthe explosives. Potential technologies applicable for treatment of contaminated wastestreams from manufacturing facilities and environmental matrices are also be included.This book provides the reader an insight into the depth and breadth of theoreticaland empirical models and experimental techniques currently being developed in thefield of energetic materials. It presents the latest research by DoD engineers andscientists, and some of DoD’s academic and industrial researcher partners. The topicsexplored and the simulations developed or modified for the purposes of energetics mayfind application in other closely related fields, such as the pharmaceutical industry.One of the key features of the book is the treatment of wastewaters generated duringmanufacturing of these energetic materials.
Author: Reilly M. Eason
Publisher:
ISBN:
Category :
Languages : en
Pages : 123
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Book Description
Energetic materials are the key active ingredients in explosive formulations. Understanding the response of energetic materials is vital for the design of safe and reliable explosives. It is a challenge to experimentally study the initial events that lead to detonation in these materials. Classical mechanics based computer simulations are a useful method for the study of these initial chemical and physical events. This research focuses on the shock response of two energetic materials: pentaerythritol tetranitrate (PETN) and hexahydro-1,3,5-trinitro-1,3,5-s-triazine (RDX). Computer simulations were used to study how the shock response of single crystals of PETN varies based on the orientation of the crystal relative to the shock wave. Thermo-mechanical properties were calculated for the shocks along two different orientations to quantify the difference in response. In RDX, the potential of voids to act as nucleation sites for detonation was studied. The magnitude of energy localization from void collapse as function of shock strength was studied for three different shock strengths.
Author: Mikalai Budzevich
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The speed of the shock or detonation wave, which is an input parameter of MW-MD, was determined by locating the Chapman-Jouguet point along the reactive Hugoniot, which was simulated using the constant number of particles, volume, and temperature (NVT) ensemble in MD. Finally, the detonation wave structure was investigated as a function of activation barrier for the chemical reaction AB+B & rarr; A+BB. Different regimes of detonation propagation including 1-D laminar, 2-D cellular, and 3-D spinning and turbulent detonation regimes were identified.
Author: Adrian P. Mouritz
Publisher: Woodhead Publishing
ISBN: 0081020937
Category : Technology & Engineering
Languages : en
Pages : 434
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Book Description
Explosion Blast Response of Composites contains key information on the effects of explosions, shock waves, and detonation products (e.g. fragments, shrapnel) on the deformation and damage to composites. The book considers the blast response of laminates and sandwich composites, along with blast mitigation of composites (including coating systems and energy absorbing materials). Broken down under the following key themes: Introduction to explosive blast response of composites, Air explosion blast response of composites, Underwater explosion blast response of composites, and High strain rate and dynamic properties of composites, the book deals with an important and contemporary topic due to the extensive use of composites in applications where explosive blasts are an ever-present threat, such as military aircraft, armoured vehicles, naval ships and submarines, body armour, and other defense applications. In addition, the growing use of IEDs and other types of bombs used by terrorists to attack civilian and military targets highlights the need for this book. Many terrorist attacks occur in subways, trains, buses, aircraft, buildings, and other civil infrastructure made of composite materials. Designers, engineers and terrorist experts need the essential information to protect civilians, military personnel, and assets from explosive blasts. Focuses on key aspects, including both modeling, analysis, and experimental work Written by leading international experts from academia, defense agencies, and other organizations Timely book due to the extensive use of composites in areas where explosive blasts are an ever-present threat in military applications
