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Nonlinear property of slightly compressible media permeated with air-filled bubbles |
Bo QIN (秦波, ) |
| College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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Abstract Based on the nonlinear oscillation of an airfilled bubble in weakly compressible media at prestressed state, the effective medium method is used to study the nonlinear property of the slightly compressible media permeated with air bubbles. It is this nonlinear oscillation of air bubbles that results in the nonlinear property of the porous media. Numerical results have confirmed that the nonlinearity of the porous media is usually high, though the optimal porosity is very small. Moreover, the nonlinear property is greatly affected by the prestressed state, porosity, and shear modulus of the matrix media.
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| Keywords
slightly compressible media
porous media
effective medium method
nonlinear parameter
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Corresponding Author(s):
null,Email:qinbo@nuaa.edu.cn
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Issue Date: 05 March 2009
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