A Numerical Study Of Projectile Impact On Explosives
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Author | : |
Publisher | : |
Total Pages | : 69 |
Release | : 1977 |
Genre | : |
ISBN | : |
HELP code is employed to study the impact to a projectile on heavily confined, inert, solid explosive Comp B3. Temperature rise due to shock compression and plastic deformation, in both the explosive and the metal confinement, is estimated. In addition, the effect of variation of the imapct parameters, such as projectile diameter, projectile velocity and confinement thickness on the rise in temperature is studied. It is concluded that usually shock is a dominant mechanism responsible for significant heating of the explosive. However, in certain situations, plastic deformations may lead to violent reaction in confined explosives.
Author | : Y. K. Huang |
Publisher | : |
Total Pages | : 41 |
Release | : 1984 |
Genre | : |
ISBN | : |
Using the SIN and 2DE computer codes, we have conducted a numerical study of the shock initiation response of both bare and covered composition-B charges to projectile impact. In the bare charge case we observed two modes of shock initiation. Independence of the explosive response with respect to projectile aspect ratio was verified and critical conditions were determined as a function of projectile diameter with unit aspect ratio. The critical velocity was observed to have a linear dependence on the reciprocal of the square root of the diameter with values a little below experimental data. Additional linear relations to completely describe buildup to detonation were generated from the results. We found that development of detonation is similar in the case of covered charges. When the critical velocity was corrected for cover plate thickness, good agreement between the results for bare and covered charges was observed.
Author | : |
Publisher | : |
Total Pages | : 1284 |
Release | : 1981 |
Genre | : Computers |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 662 |
Release | : 1981 |
Genre | : Computer programs |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 564 |
Release | : 1982 |
Genre | : Defense industries |
ISBN | : |
Author | : Hao Wu |
Publisher | : Springer |
Total Pages | : 382 |
Release | : 2019-04-23 |
Genre | : Technology & Engineering |
ISBN | : 9811332533 |
This book presents comprehensive experimental, numerical, and theoretical research on projectile impact analysis, such as the rigid projectile penetration/perforation of concrete and metallic targets, and shaped-charge-formed projectile and jet penetrations. Concrete and metal materials are widely used in protective structures in both civil engineering and armored vehicles, such as military fortifications, underground shelters, infantry fighting vehicles, and tanks, which are designed to withstand intentional or accidental impact loadings caused by projectiles and fragments, and the responses of these targets under projectile impact have been a topic of discussion for several decades. Written for researchers and engineers working in the fields of protective structures and high-speed penetration mechanics, the book is also a valuable reference for senior undergraduate and postgraduate students majoring in defense engineering, terminal ballistics and other related fields.
Author | : |
Publisher | : |
Total Pages | : 630 |
Release | : 1974 |
Genre | : Engineering |
ISBN | : |
Author | : Charles L. Mader |
Publisher | : CRC Press |
Total Pages | : 539 |
Release | : 2007-10-18 |
Genre | : Technology & Engineering |
ISBN | : 142005239X |
Major advances, both in modeling methods and in the computing power required to make those methods viable, have led to major breakthroughs in our ability to model the performance and vulnerability of explosives and propellants. In addition, the development of proton radiography during the last decade has provided researchers with a major new experimental tool for studying explosive and shock wave physics. Problems that were once considered intractable – such as the generation of water cavities, jets, and stems by explosives and projectiles – have now been solved. Numerical Modeling of Explosives and Propellants, Third Edition provides a complete overview of this rapidly emerging field, covering basic reactive fluid dynamics as well as the latest and most complex methods and findings. It also describes and evaluates Russian contributions to the experimental explosive physics database, which only recently have become available. This book comes with downloadable resources that contain— · FORTRAN and executable computer codes that operate under Microsoft® Windows Vista operating system and the OS X operating system for Apple computers · Windows Vista and MAC compatible movies and PowerPoint presentations for each chapter · Explosive and shock wave databases generated at the Los Alamos National Laboratory and the Russian Federal Nuclear Centers Charles Mader’s three-pronged approach – through text, computer programs, and animations – imparts a thorough understanding of new computational methods and experimental measuring techniques, while also providing the tools to put these methods to effective use.
Author | : K. J. Bathe |
Publisher | : Elsevier |
Total Pages | : 314 |
Release | : 2014-05-23 |
Genre | : Technology & Engineering |
ISBN | : 1483161749 |
Nonlinear Finite Element Analysis and ADINA contains the proceedings of the Fourth ADINA Conference held at Massachusetts Institute of Technology on June 15-17, 1983. Separating the papers presented in the conference as chapters, this book first elucidates the use of ADINA for analysis of mines with explosive fills. Subsequent chapters explore the use of ADINA in soil mechanics; nonlinear shell analysis; analysis of bond between prestressed steel and concrete; determination and simulation of stable crack growth; offshore structures analysis; modeling of traveling-loads and time-dependent masses; and comparison of two slideline methods. Other notable applications of ADINA are also shown.
Author | : Maxim Yu. Orlov |
Publisher | : Springer Nature |
Total Pages | : 78 |
Release | : 2022-05-23 |
Genre | : Science |
ISBN | : 3030976343 |
The book presents theoretical and experimental studies of ice fracturing process during impact and explosion load. It shows how to obtain ice in natural and artificial conditions. The book summarizes the results of full-scale experiments for 5 years on undermining ice sheets with emulsion explosives. It presents an algorithm that simulates the process of fracturing of thick ice subjected to blast load, showing that the behavior of ice under impact and explosive loads can be described by a model of continuum mechanics. Qualitative and quantitative assessments of the ballistic perfomance of an ice cube after deep penetration low-velocity projectiles are reported in this book. Some pilot problems are formulated for a deeper understanding of the mechanics of ice fracturing during impact and explosion.