Texture alignment in simple shear

Frédéric Dufour (1) , Hans Mühlhaus (2) , Louis Moresi (3)

1 GeM - Institut de Recherche en Génie Civil et Mécanique
2 Advanced Centre for Earthquakes Studies
3 Monash University [Melbourne]

We illustrate the flow behaviour of fluids with isotropic and anisotropic microstructure (internal length, layering with bending stiffness) by means of numerical simulations of silo discharge and flow alignment in simple shear. The Cosserat theory is used to provide an internal length in the constitutive model through bending stiffness to describe isotropic microstructure and this theory is coupled to a director theory to add specific orientation of grains to describe anisotropic microstructure. The numerical solution is based on an implicit form of the Material Point Method developed by Moresi et al. [1].

Mots clés: director theory; Cosserat theory; grain flow; Lagrangian integration points

Domaines: Mécanique [physics.med-ph]; Matériaux

Frédéric Dufour, Hans Mühlhaus, Louis Moresi. Texture alignment in simple shear. International Conference on Computational Science - ICCS, 2003, Melbourne, Australia. ⟨10.1007/3-540-44863-2_82⟩. ⟨hal-01009011⟩