摘要
通过对应力波与张开节理相互作用过程的分析,建立应力波在张开节理处传播的解析模型。利用该模型,研究正弦波、矩形波和三角形波在张开节理处的能量传递规律。研究结果表明:不同应力波在张开节理处的传递系数均随应力波幅值的增大而增大,随空隙宽度的增大而减小;当空隙宽度大于临界宽度时,能量传递系数为0;矩形波的临界宽度最大,正弦波的次之,三角形波的最小;存在一个最优入射角,当入射角等于最优入射角时,能量传递系数达到最大值。
Based on the analysis of interactions between stress waves and open joints, the analytic model of stress wave propagation across open joints was established. Using the established model, energy-transmitted rule of various stress waves across open joints such as sine wave, rectangle wave and triangle wave was investigated. Calculating results show that energy-transmitted coefficients of different stress waves increase with the increase of stress wave amplitude and decrease with the increase of gap width. There is a critical gap width which diminishes in turn from rectangle wave, sine wave to triangle wave, and there is an optimal incident angle for various stress waves with the same amplitude, duration and gap width.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第2期376-380,共5页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(50490272
50490274)
国家重点基础研究发展规划项目(2002CB412703)
关键词
应力波
张开节理
能量传递系数
临界宽度
最优入射角
stress wave
open joints
energy-transmitted coefficient
critical width
optimal incident angle
