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Rapid penetration into granular media : visualizing the fundamental physics of rapid earth penetration /
Rapid Penetration into Granular Media: Visualizing the Fundamental Physics of Rapid Earth Penetration introduces readers to the variety of methods and techniques used to visualize, observe, and model the rapid penetration of natural and man-made projectiles into earth materials. It provides seasoned...
| Clasificación: | Libro Electrónico |
|---|---|
| Autores principales: | , , |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Amsterdam :
Elsevier Ltd.,
2015.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; Rapid Penetration into Granular Media: Visualizing the Fundamental Physics of Rapid Earth Penetration; Copyright; Contents ; About the Authors and Contributors; Acknowledgments ; Chapter 1: Introduction; 1. Background; 2. Objectives and Scope; 3. Organization of This Book; 3.1. Introductory chapters; 3.2. Conventional approaches for visualization of traveling projectiles; 3.3. Noncontact diagnostics for visualization of traveling projectiles; 3.4. Soil surrogates for visualization of traveling projectiles; 4. Concluding Remarks
- Chapter 2: Behavior of Granular Media Under High Strain-Rate Loading1. Introduction; 2. Behavior of Sand Under Quasistatic Loading; 2.1. Uniaxial response; 2.2. Triaxial response; 3. Testing of Sand for HSR Behavior; 4. HSR Uniaxial Compression (Oedometer) Tests; 4.1. Wave propagation effects; 4.2. HSR effects on confined modulus; 4.3. Effect of saturation; 5. SHPB Test; 5.1. Background; 5.2. Stress uniformity in SHPB tests; 5.3. Effect of lateral confinement; 5.4. Grain fracture; 5.5. Particle-scale tests; 5.6. Effect of saturation; 5.7. Strain rate effects; 6. HSR Triaxial Shear Test
- 6.1. General comments6.2. Sample size and inertial effects; 6.3. Shear strength under HSR loading; 6.4. Effect of saturation; 6.5. Modulus and strain to failure; 6.6. Shear band formation; 7. Shock Wave Tests; 8. Summary and Conclusions; Acknowledgments ; References; Chapter 3: Micromechanical Behavior of Sand Learned from Multiscale Kolsky Bar Experiments; 1. Introduction; 2. Split Hopkinson Pressure Bar (Kolsky Bar); 2.1. Pulse shaping; 2.2. Confinement; 2.3. Triaxial Kolsky bar (confined Kolsky bar); 3. High Strain-Rate Behavior of Sand; 3.1. Effects of initial density; 3.2. Moisture
- 3.3. Strain rate3.4. Lateral confinement; 4. Particle Failure in Kolsky Bar Experiments; 4.1. Measurement of particle breakage; 4.2. Factors affecting particle breakage; 5. Individual Particle Failure Studies; 5.1. Dynamic compression synchronized with high-speed X-ray phase contrast imaging; 5.2. Quasi-static compression synchronized with 3D X-ray tomography; 5.3. Significance of individual particle failure modes; 6. Conclusions; References; Chapter 4: High-Speed Penetration of Granular Geomaterials; 1. Introduction; 2. General Aspects of Rapid Penetration into Granular Media
- 2.1. TerminologyTarget material description; Length scale; Velocity regimes; Projectile geometry; 2.2. Energy dissipation; 2.3. Shallow vs. deep penetration; 2.4. Cavity expansion; 2.5. Laboratory-scale vs. large-scale testing; Diameter ratio; Relative density (packing); Soil aging; Particle size; Gravitational stress; 3. Laboratory and Field Observations of Projectile Penetration; 3.1. Observations at the micro- and mesoscale; 3.2. Observations at the macroscale; 3.3. Multiscale phenomena; 4. Modeling of Projectile Penetration; 4.1. Phenomenological models; 4.2. Wholly empirical formulas