期刊
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
卷 118, 期 -, 页码 135-143出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2016.09.021
关键词
Micro-cutting; Single crystal plasticity; Finite-element modelling
资金
- Engineering and Physical Sciences Research Council (UK) [EP/K028316/1]
- Department of Science and Technology (India)
- EPSRC [EP/K028316/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K028316/1] Funding Source: researchfish
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.
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