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

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journal contribution
posted on 11.03.2016 by Murat Demiral, Anish Roy, Vadim Silberschmidt
In 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.

Funding

MD was supported with a fellowship from The Scientific and Technological Research Council of Turkey (TUBITAK 2232, project no: 114C199).

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

MECCANICA

Volume

51

Issue

2

Pages

371 - 381 (11)

Citation

DEMIRAL, M., ROY, A. and SILBERSCHMIDT, V.V., 2016. Strain-gradient crystal-plasticity modelling of micro-cutting of b.c.c. single crystal. Meccanica, 51 (2), pp. 371-381.

Publisher

© Springer

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015-10-05

Notes

The final publication is available at Springer via http://dx.doi.org/10.1007/s11012-015-0280-3.

ISSN

0025-6455

eISSN

1572-9648

Language

en

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