While much is known about the effects of shock compression on monolithic materials, the unusual physical and chemical processes that take place when a porous medium is shocked have hardly been studied until now. Here, leading researchers in condensed matter physics, physical chemistry, metallurgy, mechanics, and materials science bridge this gap. The focus is on heterogeneous deformation mechanisms, nonequilibrium thermodynamics, and chemical processes, covering such topics as modelling the complex interplay of thermal, mechanical, and chemical processes; experimental data on pore collapse and their interpretation; and synthesis of new materials through shock-induced chemical reactions. By presenting not only the most recent results, but also the open questions that remain, these essays convey the excitement of developing a scientific basis for understanding shock compression.

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1 Comments on Shock-Compression Science in Highly Porous Solids.- 1.1. Introduction.- 1.2. Macroscopic Deformation Characteristics of Powder Compacts.- 1.3. Scientific Issues and Tools.- 1.4. Materials Science Observations.- 1.5. Time-Resolved Stress Measurements.- 1.6. Conclusions.- Acknowledgments.- References.- 2 Shock Loading of Porous High Explosives.- 2.1. Introduction.- 2.2. Porous/Distended Materials in General.- 2.3. Equations of State for Porous Explosives.- 2.4. Compaction Waves.- 2.5. Shock Initiation of Porous Explosives.- 2.6. Detonation in Porous Explosives.- 2.7. Summary.- Acknowledgment.- References.- 3 Continuum Mixture Modeling of Reactive Porous Media.- 3.1. Introduction.- 3.2. Theoretical Foundations.- 3.3. Model Application to Shock Impact Experiments.- 3.4. Summary.- References.- 4 Two-Phase Media Model of Shock Compression with Chemical Reaction.- 4.1. Introduction.- 4.2. Two-Constituent Model of a Powder Mixture Undergoing Chemical Reaction.- 4.3. Numerical and Acoustic Analysis of Wave Processes in Three-Layer Target Containing a Cell with SnS/Sn+S Powder Mixture.- 4.4. Concluding Remarks.- Acknowledgments.- References.- 5 Developments in Constitutive Modeling of Shock-Induced Reactions in Powder Mixtures.- 5.1. Introduction.- 5.2. Comparative Features of the Reactive Models.- 5.3. Equivalence of the Reactive Models.- 5.4. Generalized VIR with Mass Transport and Chemical Reaction.- 5.5. Model Calculations.- 5.6. Conclusions.- Acknowledgments.- References.- 6 Discrete Meso-Element Modeling of Shock Processes in Powders.- 6.1. Introduction.- 6.2. Theory of the Discrete Meso-Dynamic Method.- 6.3. Determination of Material Parameters.- 6.4. Modeling Calculations of Shock Process in Powder Materials.- 6.5. Conclusion.- Acknowledgments.- References.- 7 Recent Developments in Modeling Shock Compression of Porous Materials.- 7.1. Introduction.- 7.2. Pore Collapse.- 7.3. Shock Compression.- 7.4. Shock Wave Propagation in Porous Materials.- 7.5. Summary.- Acknowledgment.- References.- 8 Elastic-Plastic Waves in Porous Materials.- 8.1. Introduction.- 8.2. Mathematical Models of Porous Materials.- 8.3. Mathematical Model of a Porous Elastic-Plastic Material.- 8.4. Numerical Simulation of Shock Wave Propagation in Porous Aluminum and Iron.- 8.5. Expansion Shock Wave in Porous Material.- List of Symbols.- References.- 9 The Numerical Simulation of the Dynamic Compaction of Powders.- 9.1. Introduction.- 9.2. An Eulerian Hydrocode Formulation.- 9.3. Specialized Hydrocode Development for Shock Compaction.- 9.4. Verification of the Bulk Response.- 9.5. Predicted Powder Morphologies.- 9.6. Summary.- Acknowledgments.- References.- 10 Materials Issues in Shock-Compression-Induced Chemical Reactions in Porous Solids.- 10.1. Introduction.- 10.2. Materials Issues.- 10.3. Shock-Compression Characteristics.- 10.4. Process Mechanisms of Shock-Induced Reactions.- 10.5. Summary and Concluding Remarks.- Acknowledgments.- References.- 11 Shock Synthesis of Materials.- 11.1. Introduction.- 11.2. Experimental Techniques.- 11.3. Shock Synthesis.- 11.4. Concluding Remarks.- References.- 12 Magnetic Response of Powders to Shock Loading and Fabrication of Nanocrystalline Magnets.- 12.1. Introduction.- 12.2. Estimation of the Continuum Shock State.- 12.3. In-Situ Measurements of Magnetization.- 12.4. Magnetic Properties of Shock-Consolidated Powder.- 12.5. Conclusion.- References.- Author Index.