摘要
本文通过合成一阶偏微分算子，给出了弹性介质中波传问题的吸收边界条件；为检验其吸收能力，利用弹性波的势函数理论导出了Ｐ波和Ｓ波在吸收边界处的反射系数公式。文中给出的吸收条件形式简单。
In this paper, the absorbing boundary conditions for the problems of elastic wave propagation are constructed by composition of first order partial differential operators. To test the absorbing ability, the reflection coefficient formulas on the absorbing boundaries are derived based on the potential functions theory of elastic wave. The simple form conditions given here have shown a good absorbing effect and stability by examples.
出处
《工程力学》
EI
CSCD
北大核心
1997年第2期120-127,共8页
Engineering Mechanics
关键词
弹性波
吸收边界条件
反射系数
波传问题
elastic wave, absorbing boundary conditions,reflection coefficients
