A double slip non-coaxial flow rule for viscous-plastic Cosserat materials
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- Mühlhaus, H.B., Shi, J., Olsen-Kettle, L. et al. Acta Geotech. (2011) 6: 219. doi:10.1007/s11440-011-0148-1
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We propose a double slip non-coaxial plastic model within the framework of a Cosserat continuum theory. In a Cosserat continuum, a material point possesses the degrees of freedom of an infinitesimal rigid body: two translations and one rotation in 2D. We formulate the plastic model into viscous-plastic constitutive relationships and illustrate the viscous-plastic behaviour of the model by means of numerical solution of a simple shear problem.