Elastic strain energy for uncemented granular materials

Abstract:

Hypo-elasticity does not generally imply the existence of an elastic strain energy potential. However, it appears that for a hypo-elastic model describing inherent and stress state-induced anisotropy of uncemented granular materials, elastic strain energy can be stress pathindependent. As a consequence, elastic strain energy represents a potential uniquely defining the direction of the elastic strain vector along stress paths with a constant stress ratio, which is confirmed by experimental data for some sands. (author abst.)

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