A micro-structured continuum modelling compacting fluid-saturated grounds: the effects of pore-size scale parameter

Francesco Dell'Isola (1, 2) , Luigi Rosa (3) , C. Wozniak (4)

1 Dipartimento di Ingegneria Strutturale e Geotecnica
2 Laboratorio Strutture e Materiali Intelligenti - Fondazione Tullio Levi-Civita
3 Dipartimento di Scienze Fisiche [Naples]
4 Centre of Mechanics

The effect of a "pore-size" length-scale parameter l on compaction of grounds with fluid inclusions is studied. They are modelled as continua endowed with micro-structure by means of the macro-modelling procedure proposed in [2]. We show the dependence of field evolution equations on the micro-structure parameter l and compare our model with the homogenized asymptotic ones. The consideration of the pore size l allows us to forecast the onset of micro-displacement waves as a consequence of a ground settling and to suggest a possible description of the genesis of certain microearthquakes [5] [6].

Domaines: Mécanique [physics.med-ph]

Francesco Dell'Isola, Luigi Rosa, C. Wozniak. A micro-structured continuum modelling compacting fluid-saturated grounds: the effects of pore-size scale parameter. Acta Mechanica, 1998, pp.18. ⟨hal-00497282⟩