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FE/SPH modelling of orthogonal micro-machining of f.c.c. single crystal

journal contribution
posted on 2013-06-28, 10:29 authored by S. Abolfazl Zahedi, Murat Demiral, Anish RoyAnish Roy, Vadim SilberschmidtVadim Silberschmidt
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°.

Funding

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.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

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

Publisher

© Elsevier B.V.

Version

  • AM (Accepted Manuscript)

Publication date

2013

Notes

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

ISSN

0927-0256

Language

  • en