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Characterization of the Strain Localization in a Porous Rock in Plane Strain Condition Using a New True-Triaxial Apparatus
Failure by strain localization is commonly observed in geomaterials. In a previous workshop (IWBI Minneapolis St Paul, 2002), we presented an experimental characterization of strain localization in a porous sandstone (Bésuelle et al. 2000). This study was performed with classical axisymmetric triaxial compression tests. The effect of the confining pressure was observed on several aspects: onset of localization; pattern of localization; porosity evolution inside the localized bands. Complex patterns of localization were observed at high confining pressure in the transition between the brittle and ductile regimes, showing several deformation bands in the specimens. However the history (time evolution) of the localization was not accessible because the observations were post-mortem.
Characterization of the Strain Localization in a Porous Rock in Plane Strain Condition Using a New True-Triaxial Apparatus
Failure by strain localization is commonly observed in geomaterials. In a previous workshop (IWBI Minneapolis St Paul, 2002), we presented an experimental characterization of strain localization in a porous sandstone (Bésuelle et al. 2000). This study was performed with classical axisymmetric triaxial compression tests. The effect of the confining pressure was observed on several aspects: onset of localization; pattern of localization; porosity evolution inside the localized bands. Complex patterns of localization were observed at high confining pressure in the transition between the brittle and ductile regimes, showing several deformation bands in the specimens. However the history (time evolution) of the localization was not accessible because the observations were post-mortem.
Characterization of the Strain Localization in a Porous Rock in Plane Strain Condition Using a New True-Triaxial Apparatus
Bonelli, Stéphane (editor) / Dascalu, Cristian (editor) / Nicot, François (editor) / Bésuelle, P. (author) / Hall, S. A. (author)
2011-05-28
8 pages
Article/Chapter (Book)
Electronic Resource
English
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