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A numerical study on influence of strain gradients on lattice rotation in micro-machining of a single crystal

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journal contribution
posted on 2021-09-30, 10:25 authored by Murat Demiral, Anish RoyAnish Roy, Vadim SilberschmidtVadim Silberschmidt
In latest years small scale machining has been widely used in advanced engineering applications such as medical and optical devices, micro- and nano-electro-mechanical systems. In micromachining of metals, a depth of cut becomes usually smaller than an average crystal size of a polycrystalline structure; thus, the cutting process zone can be localized fully indoors of a single grain. Due to the crystallographic anisotropy, development of small scale machining models accounting for crystal plasticity are essential for a precise calculation of material removal under such circumstances. For this purpose, a 3D finite-element model of micro-cutting of a single grain was developed. A crystal-plasticity theory accounting for gradients of strain, implemented in ABAQUS/Explicit via a user-defined material subroutine VUMAT, was used in the computations. The deformation-induced lattice rotations in micro-cutting of a single crystal were analyzed extensively.

Funding

MAST: Modelling of advanced materials for simulation of transformative manufacturing processes

Engineering and Physical Sciences Research Council

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History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Challenge Journal of Structural Mechanics

Volume

7

Issue

3

Pages

117 - 122

Publisher

Tulpar Academic Publishing

Version

  • VoR (Version of Record)

Publisher statement

This is an Open Access Article. It is published by Tulpar Academic Publishing under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

Acceptance date

2021-09-28

Publication date

2021-09-30

Copyright date

2021

eISSN

2149-8024

Language

  • en

Depositor

Prof Vadim Silberschmidt. Deposit date: 29 September 2021

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