Numerical modelling of micro-machining of f.c.c. single crystal: Influence of strain gradients

作者：Demiral Murat; Roy Anish^*; El Sayed Tamer; Silberschmidt Vadim V

来源：Computational Materials Science, 2014, 94: 273-278.

DOI：10.1016/j.commatsci.2014.05.058

• Strain-gradient crystal plasticity
• Orthogonal micromachining
• Copper single crystal
• Finite-element analysis

A micro-machining process becomes increasingly important with the continuous miniaturization of components used in various fields from military to civilian applications. To characterise underlying micromechanics, a 3D finite-element model of orthogonal micro-machining of f.c.c. single crystal copper was developed. The model was implemented in a commercial software ABAQUS/Explicit employing a user-defined subroutine VUMAT. Strain-gradient crystal-plasticity and conventional crystal-plasticity theories were used to demonstrate the influence of pre-existing and evolved strain gradients on the cutting process for different combinations of crystal orientations and cutting directions.

• 出版日期2014-11