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Title: Micro-cutting of single-crystal metal: Finite-element analysis of deformation and material removal
Authors: Liu, Qiang
Roy, Anish
Tamura, Shoichi
Matsumura, Takashi
Silberschmidt, Vadim V.
Keywords: Micro-cutting
Single crystal plasticity
Finite-element modelling
Issue Date: 2016
Publisher: © Elsevier
Citation: LIU, Q. ...et al., 2016. Micro-cutting of single-crystal metal: Finite-element analysis of deformation and material removal. International Journal of Mechanical Sciences, 118, pp. 135-143.
Abstract: This paper presents analysis of mechanics in a micro-cutting process of a single-crystal metal – mechanisms of deformation and material removal related to an anisotropic crystallographic structure of a work-piece. A crystal-plasticity theory was implemented in a finite-element (FE) modelling scheme to consider inherently anisotropic deformation of a single-crystal metal at micro-scale. A new shear-strain-based criterion and several conventional strain-based criteria were employed to simulate the material removal process, and their effect on the anisotropy of cutting forces was studied. Subsequently, the micro-cutting process of single-crystal copper was predicted using FE modelling by combining the crystal-plasticity theory and the proposed criterion of material removal. The validity of the present FE modelling methodology was corroborated through a comprehensive comparison between FE simulations and experimental data in terms of cutting forces, chip morphology, deformation field, pile-up patterns and misorientation angle in the work-piece.
Description: This paper was accepted for publication in the journal International Journal of Mechanical Sciences and the definitive published version is available at https://doi.org/10.1016/j.ijmecsci.2016.09.021.
Sponsor: This work was supported by the Engineering and Physical Sciences Research Council (UK) through grant EP/K028316/1 and Department of Science and Technology (India), project MAST.
Version: Accepted for publication
DOI: 10.1016/j.ijmecsci.2016.09.021
URI: https://dspace.lboro.ac.uk/2134/23025
Publisher Link: https://doi.org/10.1016/j.ijmecsci.2016.09.021
ISSN: 0020-7403
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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