ELASTIC WAVE DECAY II,
Abstract
A time dependent non-linear formulation of shock propagation in an originally isotropic medium is presented. It is postulated that such a formulation accounts for the known non-linearity of the dissipative mechanisms which result in the decay of elastic waves in crystalline solids. By combining this non-linear theory with the appropriate conservation equations, characteristics and characteristic equations are derived which explicitly contain dispersion and decay in terms of unknown functions of the solid medium in question. By applying theory and experimental data available from ultrasonics the functions of importance to the linear region are found. The growth and decay of the amplitudes associated with the first non-linear contributions are traced by seeking solutions of a non-linear wave equation and applying appropriate boundary conditions.(Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1964
- Accession Number
- AD0428843
Entities
People
- Paul Harris
Organizations
- Naval Ordnance Laboratory