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Strain-gradient crystal-plasticity modelling of micro-cutting of b.c.c. single crystal

By Murat Demiral, Anish Roy and Vadim V. Silberschmidt


The final publication is available at Springer via recent years thanks to enhancements in design of advanced machines, laser metrology and computer control, ultra-precision machining has become increasingly important. In micromachining of metals the depth of cut is usually less than the average grain size of a polycrystalline aggregate; hence, a cutting process can occur entirely within a single crystal. The respective effect of crystallographic anisotropy requires development of machining models that incorporate crystal plasticity for an accurate prediction of micro-scale material removal under such conditions. To achieve this, a 3D finite-element model of orthogonal micro-cutting of a single crystal of b.c.c. brass was implemented in a commercial software ABAQUS/Explicit using a user-defined subroutine VUMAT. Strain-gradient crystal-plasticity theories were used to demonstrate the influence of evolved strain gradients on the cutting process for different cutting directions

Topics: Strain-gradient crystal-plasticity, Orthogonal micro-cutting, Brass single crystal, Finite-element analysis
Publisher: © Springer
Year: 2016
DOI identifier: 10.1007/s11012-015-0280-3
OAI identifier:

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