Author(s)

J. Pierry & X.C. Wang

Abstract

Finite element modelling of strain localisation in shear bands during a cutting process J. Pierry, X.C. Wang Department MSM, University of Liege, 6, quai Banning, 4000 Liege, Belgium ABSTRACT Several simulations of the cutting process were carried out on two types of materials: a metal and a rock. For that purpose, two adequate laws implemented in the large strain finite element code LAGAMINE were used. These laws allow strain localisation in shear bands. The beginning of this localisation is detected by different means: by a bifurcation criterion, in the sense of the Rice analysis (1) or by a scalar based on the evolution of the strains during the cutting process. The loading is realised by the displacement of the cutter, step by step. After each step, the criterion are computed, indicating a progression of the area where localised strains could be produced. Classical finite element meshes lock the progression of shear bands. Therefore, remeshing techniques are developed an

Keywords