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篇目详细内容 |
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【篇名】 |
Effective medium method of slightly compressible elastic media permeated with air-filled bubbles |
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【刊名】 |
Frontiers of Physics in China |
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【刊名缩写】 |
Front. Phys. China |
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【ISSN】 |
1673-3487 |
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【EISSN】 |
1673-3606 |
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【DOI】 |
10.1007/s11467-006-0050-8 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2006 |
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【卷期】 |
1
卷4期 |
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【页码】 |
500-505
页,共
6
页 |
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【作者】 |
QIN Bo;
LIANG Bin;
ZHU Zhe-min;
CHENG Jian-chun;
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【关键词】 |
effective medium; bubbles; compressional wave; nonlinear coefficient |
【摘要】 |
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An effective medium method is developed for the slightly compressible elastic media permeated with air-filled bubbles, according to the nonlinear oscillation of the bubble, which happens when compressional wave travels through the porous media. The effective Lame coefficients of the porous medium and the nonlinear elastic wave equation are deduced, based on the fact that the micro-unit of the effective medium should have the same stress and strain as the micro-unit of the porous media. The linearized properties obtained by this method are in good agreement with the results of Gaunaurd’s classic theory [Gaunaurd G.C. and überall H., J. Acoust. Soc. Am., 1978, 63: 1699―1711]. Furthermore, the nonlinear coefficient, which is an important property of the porous media, can also be acquired by this method. |
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