| 弹性介质波传问题的吸收边界条件 |
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| 引用本文： | 梁非 杨慧珠. 弹性介质波传问题的吸收边界条件[J]. 工程力学, 1997, 14(2): 120-127 |
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| 作者姓名： | 梁非 杨慧珠 |
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| 作者单位： | [1]太原工业大学应用力学研究所 [2]清华大学工程力学系 |
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| 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，且算例表明吸收效果和稳定性都很好
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| 关 键 词： | 弹性波，吸收边界条件，反射系数 |
ABSORBING BOUNDARY CONDITIONS FOR ELASTIC WAVE PROPAGATION |
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| Liang Fei Yang Huizhu. ABSORBING BOUNDARY CONDITIONS FOR ELASTIC WAVE PROPAGATION[J]. Engineering Mechanics, 1997, 14(2): 120-127 |
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| Authors: | Liang Fei Yang Huizhu |
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| Affiliation: | Liang Fei Yang Huizhu (Taiyuan University of Technology) (Tsinghua University) |
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| Abstract: | 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. |
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| Keywords: | elastic wave absorbing boundary conditions reflection coefficients |
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