| 考虑衰减波特性的透射边界及其实现 |
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| 引用本文： | 朱志辉,余志武,吴方伯,尚守平.考虑衰减波特性的透射边界及其实现[J].湖南大学学报(自然科学版),2007,34(12):1-5. |
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| 作者姓名： | 朱志辉 余志武 吴方伯 尚守平 |
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| 作者单位： | 1. 中南大学,土木建筑学院,湖南,长沙,410075
2. 湖南大学,土木工程学院,湖南,长沙,410082 |
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| 基金项目： | 国家自然科学基金资助项目(50578062,50778181) |
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| 摘 要： | 针对几何衰减外行波,推导了几何衰减平面波多次透射边界、几何衰减球面波多次透射边界以及2种边界的频域反射系数,与无衰波多次透射边界相比,基于几何衰减波特性的多次透射边界在透射几何衰减外行波时,反射系数最小.通过对有限元分析软件ANSYS进行二次开发,成功地将几何衰减波多次透射边界、无衰波多次透射边界以及粘弹性人工边界嵌入到有限元软件中,由3种人工边界下散射问题的有限元数值算例结果可知:考虑衰减波特性的二阶透射边界计算精度最高.
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| 关 键 词： | 土-结构动力相互作用 有限元 粘弹性人工边界 多次透射边界 衰减波 |
| 文章编号： | 1000-2472（2007）12-0001-05 |
| 收稿时间： | 2007-04-16 |
| 修稿时间： | 2007年4月16日 |
Research on the Artificial Boundary in the Soil-Structure Dynamic Interaction |
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| ZHU Zhi-hui,YU Zhi-wu,WU Fang-bo,SHANG Shou-ping.Research on the Artificial Boundary in the Soil-Structure Dynamic Interaction[J].Journal of Hunan University(Naturnal Science),2007,34(12):1-5. |
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| Authors: | ZHU Zhi-hui YU Zhi-wu WU Fang-bo SHANG Shou-ping |
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| Abstract: | Based on the transmitting character of scattered wave,the attenuating wave multi-transmitting artificial boundary(including 2-D and 3-D case) and its reflection coefficient were presented.Compared with the reflection coefficient of non-attenuating wave multi-transmitting artificial boundary,the reflection coefficient of attenuating wave multi-transmitting artificial boundary was the least.By programming in APDL provided by ANSYS,three different artificial boundaries were added to ANSYS to simulate the infinite media.Comparison of the results of scattering problem indicated that the precision of attenuating wave multi-transmitting artificial boundary was the highest. |
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| Keywords: | soil-structure dynamic interaction finite-element method viscous-spring artificial boundary multi-transmitting boundary attenuating wave |
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