Instabilities and discontinuities in two-phase media - Archive ouverte HAL
Communication Dans Un Congrès Année : 2006

Instabilities and discontinuities in two-phase media

Résumé

Within the framework of the generalised theory of heterogeneous media, the complete set of equations is derived for a three-dimensional, fluid-saturated porous medium. Analytical and numerical investigations have been carried out into the wave propagation characteristics for the case of a skeleton which exhibits strain softening. Wave propagation has a dispersive character in this medium, but the internal length scale associated with it vanishes in the short wave-length limit, which has the implication that localisation in a zero width will occur and no regularisation will be present, unless the solid phase is augmented with a so-called localisation limiter. Alternatively, all damage can be lumped in a discrete interface. The second part of the contribution therefore focuses on the modelling of arbitrary discontinuities in a fluid-saturated porous medium.
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Dates et versions

hal-04712841 , version 1 (27-09-2024)

Identifiants

  • HAL Id : hal-04712841 , version 1

Citer

Rene De Borst, Marie-Angele Abellan, Julien Réthoré. Instabilities and discontinuities in two-phase media. COMPUTATIONAL MECHANICS: SOLIDS, STRUCTURES AND COUPLED PROBLEMS, Jun 2006, PO BOX 17, 3300 AA DORDRECHT, Netherlands. pp.173+. ⟨hal-04712841⟩
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