Wave Propagation in Pre-stressed Elastic Media
E.I. Romenski, E.V. Lys, V.A. Cheverda and M.I. Epov
Journal name: Seismic Technology
Issue: Vol 11, No 4, October 2014 pp. 1 - 10
Info: Article, PDF ( 197Kb )
Price: € 30
A new computational model is proposed for propagation of low-amplitude seismic waves through a pre-stressed anisotropic medium. The model provides clues to kinematics and dynamics of these waves forming under the effect of initial stress. The governing differential equations are formulated in terms of velocity, stress tensor and small rotation of an element of the medium. The equations are solved numerically by means of the rotated staggered-grid method, and the approach is tested in numerical examples.