报告摘要
Water retention in soil exhibits diverse phenomena with density-dependent hysteretic suction-saturation response. This seminar will explain these phenomena using Landau’s non-equilibrium hydrodynamic framework of continuum mechanics, enriched by Onsager's reciprocity principles and Mario Liu’s two-stage irreversible principle for heterogeneous media. The theory distinguishes true equilibrium from meta-stable states, and clarifies the dependence of the so-called effective stress of soils on both its water retention properties, and its compressibility.
报告人简介
Itai Einav is Professor of Geomechanics at the University of Sydney and Director of SciGEM. His research focuses on the physics of porous and granular materials—sand, clay, rock, and snow—with applications to mineral processing, brittle collapse, and natural hazards such as earthquakes, landslides, and avalanches. He chairs TC105 (Geo-Mechanics) of the ISSMGE and is an editor of Granular Matter.