Reflection and transmission of acoustic waves at the interface between rocks in the presence of elastic-plastic deformations
Reflection and transmission of acoustic waves at the interface between rocks in the presence of elastic-plastic deformations
复制标题
存在弹塑性变形时岩石界面处声波的反射和传播
DOI：
10.1088/1742-2132/4/2/012
复制
发表时间：
2007-06-01
影响因子：
1.4
通讯作者：
Wang, Ke-Xie
中科院分区：
文献类型：
--
作者：
Liu, Jin-Xia;Cui, Zhi-Wen;Wang, Ke-Xie
The problems of the reflection and transmission of acoustic waves at the interface between rocks in the presence of elastic - plastic deformations are investigated based on the acoustoelastic theory for elastic - plastic materials. The effects of statically elastic - plastic deformations on the energy reflection and transmission coefficients, reflected and refracted angles are investigated. The plane of incident wave can coincide with or deviate from planes of material symmetry. Elastic - plastic deformations are assumed to be locally homogeneous and to satisfy static boundary conditions. To explain the difference with the statically elastic deformation, the velocities are computed in a rock with elastic - plastic deformations. The variations of these energy coefficients with elastic - plastic deformations have been shown graphically. The velocities decrease, the energy is distributed, and the critical angles are changed when the rock undergoes elastic - plastic deformations compared with those of the statically elastic deformations. The directions of transmitted wave vectors are changed especially at relatively large incident angles when the material is subjected to statically elastic or elastic - plastic deformations.
