Geometric and numerical modeling for porous media wave propagation
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2014
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Determining hydro-mechanical properties of porous materials present a challenge because they exhibit a more complex behaviour than their continuous counterparts -- The geometrical factors such as pore shape, length scale and occupancy play a definite role in the materials characterization -- On the other hand, computational mechanics calculations for porous materials face an intractable amount of data -- To overcome these difficulties, this investigation propose a workflow (Image segmentation, surface triangulation and parametric surface fitting) to model porous materials (starting from a high-resolution industrial micro-CT scan) and transits across different geometrical data (voxel data, cross cut contours, triangular shells and parametric quadrangular patches) for the different stages in the computational mechanics simulations -- We successfully apply the proposed workflow in aluminum foam -- The various data formats allow the calculation of the tortuosity value of the material by using viscoelastic wave propagation simulations and poroelastic investigations -- Future work includes applications for the geometrical model such as boundary elements and iso-geometrical analysis, for the calculation of material properties
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@inproceedings{Uribe_etal_2014_WavePropag,
author={D. Uribe and M. C. Osorno and H. Steeb and E. H. Saenger and O. Ruiz. },
title={Geometric and numerical modeling for porous media wave propagation.},
booktitle={Tools and Methods of Competitive Engineering TMCE},
year={2014},
editor={},
volume={},
pages={685-694},
note={ISBN 978-94-6186-176-4},
url={},
document_type={},
month={May 19-23},
publisher ={},
organization={},
address={Budapest, Hungary},
abstract ={Determining hydro-mechanical properties of porous materials present a challenge because they exhibit a more complex behaviour than their continuous counterparts. The geometrical factors such as pore shape, length scale and occupancy play a definite role in the materials characterization. On the other hand, computational mechanics calculations for porous materials face an intractable amount of data. To overcome these difficulties, this investigation propose a workflow (Image segmentation, surface triangulation and parametric surface fitting) to model porous materials (starting from a high-resolution industrial micro-CT scan) and transits across different geometrical data (voxel data, cross cut contours, triangular shells and parametric quadrangular patches) for the different stages in the computational mechanics simulations. We successfully apply the proposed workflow in aluminum foam. The various data formats allow the calculation of the tortuosity value of the material by using viscoelastic wave propagation simulations and poroelastic investigations. Future work includes applications for the geometrical model such as boundary elements and iso-geometrical analysis, for the calculation of material properties.}
}