- Hueckel, T. and Drescher, A., On dilatational effects of inelastic granular media,
Arch. Mech. (Poland), vol. 27 no. 1
pp. 157 - 72 .
(last updated on 2007/04/09)
An incremental elastic-plastic model of granular material is proposed. The theory is based on dilatational plasticity for irreversible part of deformation and hypoelasticity for reversible part. The hardening and hypoelastic moduli are postulated to be functions of density changes. The resulting coupling of reversible and irreversible deformation laws is discussed. The experiments were carried out in the uniaxial strain state on several granular media (e.g. wheat and rice grains) and compared with theoretical solutions. The procedure for determination of material functions is presented
classical mechanics of continuous media;granular materials;plastic deformation;