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Effects of a non-coaxial flow rule on shear bands in viscous-plastic materials

# Effects of a non-coaxial flow rule on shear bands in viscous-plastic materials,10.1007/s10035-011-0254-7,Granular Matter,Hans B. Mühlhaus,Jingyu Shi,L

Effects of a non-coaxial flow rule on shear bands in viscous-plastic materials
A class of non-coaxial plasticity models is revisited in which the plastic deformation is carried by one (single slip) or two (double slip) slip systems that are inclined at $${\pm (\pi/4+\nu/2), 0\le \nu \le \phi}$$ to the less compressive principal stress axis; ν is the angle of non-coaxiality and $${\phi}$$ is the internal angle of friction of the material. The non-coaxial model is combined with a Newtonian viscous rheology to form a viscous-plastic model. The model is applied to model strain localisation in extension and compression on a time scale typical for deformation processes in the lithosphere. We would like to dedicate this article to the memory of Ioannis Vardoulakis who always took a keen interest in bifurcation theory and shear banding for granular materials.
Journal: Granular Matter - GRANUL MATTER , vol. 13, no. 3, pp. 205-210, 2011
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## Citation Context (1)

• ...Mühlhaus et al. [4] develop a non-coaxial Cosserat continuum model based on a double-slip mechanism, a model that has interestingapplicationsindescribingdeformationofthelithosphere...

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### Developments in micromechanical modelling of granular materials

Journal: Granular Matter - GRANUL MATTER , vol. 13, no. 3, pp. 183-185, 2011