SOC73, A One-dimensional Wave Propagation Code for Rock Media

Abstract

SOC73 is a highly modified version of SOC, a computer code that numerically stimulated mechanical wave propagation in geologic media. Innovation in SOC73 lies mainly in the constitutive modeling of solid media. New models have been introduced in which the pressure-volume behavior and the behavior of brittle, ductile, and tensile failure are more continuous and representative of laboratory and field observations than before. There are also new methods of low-pass compressional filtering and high-pass distorsional filtering that are more physically and numerically satisfying. Finally, the concept of failure-associated strain has been introduced. It allows an estimate of the damage caused to the medium by an inelastic stress wave.