Chapter 7

Shock Mechanics and Interfaces

7.1. Introduction to shock wave mechanics

7.1.1. Preface

This chapter deals with the propagation of shock waves in condensed matter and related phenomena, such as reflections and transmissions at interfaces, and the possible consecutive damage of the material. Shock wave mechanics has been the subject of an increasing number of studies, boosted by defense applications. This chapter does not represent a detailed study on shock mechanics but presents some basics on shock wave mechanics. The description will be limited to the case of the propagation of a planar shock, propagating normally to interfaces and free surfaces, in homogeneous environments, in Lagrangian terms. The second part of this chapter discusses the shock adherence test, as well as some of the results that have been obtained for metallic assemblies. A summary of the progress made over the past 10 years will also be given.


The earliest research on shock waves, led by Riemann, Rankine, and Hugoniot, dates from the second half of the 19th century. Shocks are discontinuities of thermodynamic and mechanical magnitudes that propagate at high velocity (several thousand meters per second in condensed matter), putting matter in extreme and unsteady states. Irreversible phenomena can then appear within the shocked medium, such as compaction, damage and fragmentation, penetration and perforation, and phase-transition. The observation of these phenomena requires sophisticated and state-of-the-art ...

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