The Influence of the Fluctuation of Micro-Polar Boundary Conditions on the Evolution of Shear Strain Localization in Granular Materials

Abstract:

In this paper the interface behavior between an infinite strip of a granular mate- rial and a rough boundary under plane shearing is numerically investigated using a micro-polar continuum approach. Particular attention is paid to the influence of a fluctuation of micro-polar boundary conditions along the interface on the evolution of shear strain localization within the granular material. The mechanical behavior of the cohesionless granular material is described with a micro-polar hypoplastic model. The evolution equations for the stress and the couple stress are non-linear tensor valued functions which model inelastic behavior. The investigations show that the micro-polar boundary conditions have a strong influence on the location and thickness of the zone of strain localization when relative displacements within the interface are excluded.

• Periodical: Key Engineering Materials (Volumes 340-341)
• Pages: 1255-1260
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.340-341.1255
• Online since: June 2007
• Authors: Erich Bauer, Sendy F. Tantono, Wen Xiong Huang
• Keywords: Granular Material, Hypoplasticity, Micro-Polar Continuum, Soil Structure Interface

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