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Gewählte Publikation:

Tejchman, J; Wu, W.
(2009): Non-coaxiality and stress-dilatancy rule in granular materials: FE investigation within micro-polar hypoplasticity
INT J NUMER ANAL METH GEOMECH. 2009; 33(1): 117-142. FullText FullText_BOKU

Abstract:
This paper deals with FE investigations of shear localization in dilatant granular bodies. The calculations were carried out with a hypoplastic constitutive law enhanced by micro-polar terms to properly model the shear zone evolution. The behaviour of an initially medium dense sand specimen with very smooth and very rough horizontal boundaries was analyzed during a plane strain compression test. A stochastic distribution of the initial void ratio was assumed to be spatially correlated. Attention was focused on the non-coaxiality of the directions of the principal strain increments and principal stresses in the shear zone and on the stress-dilatancy rule. Copyright (C) 2008 John Wiley & Sons, Ltd.
Autor/innen der BOKU Wien:
Wu Wei
BOKU Gendermonitor:


Find related publications in this database (Keywords)
finite element method
hypoplasticity
mnicro-polar model
non-coaxiality
plane strain compression
shear localization
stress-dilatancy rule


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