Mathematical Modeling of Shock-Wave Processes in Condensed Matter


Book Description

This book offers an interdisciplinary theoretical approach based on non-equilibrium statistical thermodynamics and control theory for mathematically modeling shock-induced out-of-equilibrium processes in condensed matter. The book comprises two parts. The first half of the book establishes the theoretical approach, reviewing fundamentals of non-equilibrium statistical thermodynamics and control theory of adaptive systems. The latter half applies the presented approach to a problem on shock-induced plane wave propagation in condensed matter. The result successfully reproduces the observed feature of waveform propagation in experiments, which conventional continuous mechanics cannot access. Further, the consequent stress–strain relationships derived with relaxation and inertia effect in elastic–plastic transition determines material properties in transient regimes.




Time Reversibility, Computer Simulation, Algorithms, Chaos


Book Description

The book begins with a discussion, contrasting the idealized reversibility of basic physics against the pragmatic irreversibility of real life. Computer models, and simulation, are next discussed and illustrated. Simulations provide the means to assimilate concepts through worked-out examples. State-of-the-art analyses, from the point of view of dynamical systems, are applied to many-body examples from nonequilibrium molecular dynamics and to chaotic irreversible flows from finite-difference, finite-element, and particle-based continuum simulations. Two necessary concepts from dynamical-systems theory - fractals and Lyapunov instability - are fundamental to the approach. Undergraduate-level physics, calculus, and ordinary differential equations are sufficient background for a full appreciation of this book, which is intended for advanced undergraduates, graduates, and research workers.




IUTAM Symposium on Combustion in Supersonic Flows


Book Description

Proceedings of the IUTAM Symposium held in Poitiers, France, 2-6 October 1995




Time Reversability, Computer Simulation, Algorithms, Chaos


Book Description

The book begins with a discussion, contrasting the idealized reversibility of basic physics against the pragmatic irreversibility of real life. Computer models, and simulation, are next discussed and illustrated. Simulations provide the means to assimilate concepts through worked-out examples. State-of-the-art analyses, from the point of view of dynamical systems, are applied to many-body examples from nonequilibrium molecular dynamics and to chaotic irreversible flows from finite-difference, finite-element, and particle-based continuum simulations. Two necessary concepts from dynamical-systems theory - fractals and Lyapunov instability - are fundamental to the approach. Undergraduate-level physics, calculus, and ordinary differential equations are sufficient background for a full appreciation of this book, which is intended for advanced undergraduates, graduates, and research workers.




Numerical Modeling in Micromechanics via Particle Methods - 2004


Book Description

The variety of applications of PFC has continued to increase in the ten years since the first release of these programs. This volume contains a collection of fifty-two papers selected for presentation at the 2nd PFC Symposium, held 27-29 October 2004, in Kyoto, Japan. These contributions cover a wide range of engineering applications and theoretica







Shock Waves in Condensed Matter - 1983


Book Description

Shock Waves in Condensed Matter – 1983 covers the proceedings of the American Physical Society Topical Conference, held in Santa Fe, New Mexico on July 18-21, 1983. The book focuses on the response of matter to dynamic high pressure and temperature. The selection first elaborates on the review of theoretical calculations of phase transitions and comparisons with experimental results; theoretical and experimental studies of shock-compressed benzene and polybutene; and theory of the iron equation of state and melting curve to very high pressures. The text then ponders on nonhydrostatic effects in stress-wave induced phase transformation of calcite; Bauschinger effect model suitable for use in large computer codes; and strain rate sensitivity prediction for porous bed compaction. The manuscript takes a look at flaw nucleation and energetics of dynamic fragmentation, shock loading behavior of fused quartz, and aluminum damage simulation in high-velocity impact. Shock wave diagnostics by time-resolved infrared radiometry and non-linear Raman spectroscopy; Raman scattering temperature measurement behind a shock wave; and experiments and simulation on laser-driven shock wave evolution in aluminum targets are also discussed. The selection is a dependable reference for scientists and readers interested in the response of matter when exposed to dynamic high pressure and temperature.




Behavior of Materials under Impact, Explosion, High Pressures and Dynamic Strain Rates


Book Description

This book presents the results of experimental and theoretical studies of the destruction of solids under impact, explosion, high pressures, and strain rates. The content identifies the basic laws of the destruction of bodies under dynamic loads. The results of numerical studies were obtained using numerical methods on the Lagrangian, Euler, and ALE approaches to the description of the motion of continuous media. Numerical methods and mathematical models have been tested by comparison with experimental data and well-known analytical solutions (for instance, Rankin–Hugoniot laws). Experimental studies were performed on unique ballistic installations with the registration of fast processes (high-speed shooting). The results are used as new tests to verify the developing modeling methods. The research objects were metal multilayer plates, functionally graded materials, advanced, smart, and natural materials, etc. The book is interesting to specialists in the field of mathematical modeling and experimental methods for studying fast processes under dynamic loading.




Damaging Effects of Weapons and Ammunition


Book Description

Comprehensive coverage of weapon damage effects on a variety of objects Damaging Effects of Weapons and Ammunition delivers a thorough exploration of a range of issues related to the effects of ammunition and weapons. The book includes coverage of the basic concepts of the theory of efficiency and the physical foundations of the functional and damaging effects of fragments, shaped charges, high-explosive and penetrating weapons. The author discusses the calculation formulas used to evaluation the parameters of damage fields and their interaction with various objects. Additionally, the book expands on the damage criteria of weapons, the characteristics of the vulnerability of objects with respect to a variety of damaging factors, dependencies for assessing safe distances, and the resistance of various structures to the effects of explosion and impact. Damaging Effects of Weapons and Ammunition also offers: Detailed calculation methods indicating areas of application and the necessary units of used quantities Extensive examples of classic designs of ammunition from around the world Discussions of the characterization of various types of ammunition, including high-explosive, fragment, penetrative, and shaped charges A chapter on the numerical simulation of high-speed processes Perfect for technical specialists working in the fields of explosion safety and explosives, Damaging Effects of Weapons and Ammunition also belongs in the libraries of researchers and students studying explosion phenomena, explosive technologies, explosion safety, and materials science.