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Title: FE/SPH modelling of orthogonal micro-machining of f.c.c. single crystal
Authors: Zahedi, S. Abolfazl
Demiral, Murat
Roy, Anish
Silberschmidt, Vadim V.
Keywords: SPH
FE modelling
Orthogonal micromachining
Crystal plasticity
Issue Date: 2013
Publisher: © Elsevier B.V.
Citation: ZAHEDI, S.A. ... et al., 2013. FE/SPH modelling of orthogonal micro-machining of f.c.c. single crystal. Computational Materials Science, 78, October 2013, pp. 104 - 109
Abstract: With an increased use of mechanical micro-machining in manufacture of small-sized components with complex geometries, the need to understand mechanics of machining at micro-scale is recognized. Numerical modelling is a powerful tool which can be used to gain insight into the underlying mechanisms that drive a plastic response of materials in high-deformation processes. Excessive element distortion in a finite-element simulation is a fundamental problem in numerical modelling of machining processes. In this study, we present a hybrid modelling approach for micro-machining of crystalline metals with the use of smoothed particle hydrodynamics and continuum finite element analysis to overcome this problem. The model is implemented in a commercial software ABAQUS/Explicit using a user-defined subroutine (VUMAT). The model is used to elucidate the effect of crystallographic anisotropy on a response of face centred cubic (f.c.c.) metals to machining. Based on our study, cutting in the (1 0 0) plane is least sensitive to the cutting direction with (1 0 1) plane being the most sensitive. The maximum cutting force is observed to be on the (1 0 1) plane with the cutting tool oriented in the 0°.
Description: This article was published in the journal, Computational Materials Science [© Elsevier B.V.] and the definitive version is available at: http://dx.doi.org/10.1016/j.commatsci.2013.05.022
Sponsor: AZ and MD acknowledge the use of the UMAT in the development of the VUMAT for the CP theory developed by Yonggang Huang [17] and Jeffrey Kysar [18]. MD, AR and VVS acknowledge the funding from the European Union Seventh Framework Programme (FP7/2007-2013) under Grant Agreement No. PITNGA- 2008-211536, Project MaMiNa.
Version: Accepted for publication
DOI: 10.1016/j.commatsci.2013.05.022
URI: https://dspace.lboro.ac.uk/2134/12648
Publisher Link: http://dx.doi.org/10.1016/j.commatsci.2013.05.022
ISSN: 0927-0256
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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