Texture alignement in simple shear

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

1 GeM - Institut de Recherche en Génie Civil et Mécanique
2 Advanced Centre for Earthquakes Studies
3 School of Mathematical Sciences [Clayton]

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

Domaines: Mécanique [physics.med-ph]

Frédéric Dufour, Hans Muhlhaus, Louis Moresi. Texture alignement in simple shear. Computational Science — ICCS 2003, Jun 2003, St. Petersburg, Russia. pp.837-844, ⟨10.1007/3-540-44863-2_82⟩. ⟨hal-00333885⟩