abstract

Those aspects of shock wave propagation which differ qualitatively from linear wave propagation are discussed and illustrated. These include amplitude attenuation, energy dissipation and their interrelations, spectral intensity distribution and its variation with distance, and the relations of wave structure to thermodynamic, shear, and time-dependent material properties. Pertinent formulae are derived and calculations are given for a rigid-locking solid. These illustrate the concentration of energy at low frequencies as the wave progresses and provide upper limits for the rates of attenuation of peak shock pressure in plane and spherical geometries.

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