Nonlocal regularization of an anisotropic critical state model for sand

Abstract Many advanced constitutive models which can capture the strain-softening and state-dependent dilatancy response of sand have been developed. These give good prediction single soil element behaviour under various loading conditions. But solution will be highly mesh-dependent when they are used in real boundary value problems due to strain-softening. They strain localization pattern bearing capacity foundations on sand. Nonlocal regularization an anisotropic critical state model is presented. The evolution void ratio has a significant influence assumed depend volumetric increment both local neighbouring integration points. method implemented using explicit stress method. nonlocal simulating drained plane compression strip footing dry In compression, mesh-independent results for force–displacement relationship shear band thickness obtained mesh size smaller than internal length. footings predicted by much less mesh-sensitive prediction. independent. thus proper application practical geotechnical engineering problems.