Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8351
Title: Mesoplasticity approach to studies of the cutting mechanism in ultra-precision machining
Authors: Lee, WB 
Wang, H
To, S 
Cheung, CF 
Chan, CY
Keywords: Cutting mechanism
High frequency tool-tip vibration
Mesoplasticity
Micro-cutting force variation
Shear angle prediction
Size effect
Ultra-precision machining
Issue Date: 2014
Publisher: Springer
Source: Chinese journal of mechanical engineering, 2014, v. 27, no. 2, p. 219-228 How to cite?
Journal: Chinese journal of mechanical engineering 
Abstract: There have been various theoretical attempts by researchers worldwide to link up different scales of plasticity studies from the nano-, micro- and macro-scale of observation, based on molecular dynamics, crystal plasticity and continuum mechanics. Very few attempts, however, have been reported in ultra-precision machining studies. A mesoplasticity approach advocated by Lee and Yang is adopted by the authors and is successfully applied to studies of the micro-cutting mechanisms in ultra-precision machining. Traditionally, the shear angle in metal cutting, as well as the cutting force variation, can only be determined from cutting tests. In the pioneering work of the authors, the use of mesoplasticity theory enables prediction of the fluctuation of the shear angle and micro-cutting force, shear band formation, chip morphology in diamond turning and size effect in nano-indentation. These findings are verified by experiments. The mesoplasticity formulation opens up a new direction of studies to enable how the plastic behaviour of materials and their constitutive representations in deformation processing, such as machining can be predicted, assessed and deduced from the basic properties of the materials measurable at the microscale.
URI: http://hdl.handle.net/10397/8351
ISSN: 1000-9345
DOI: 10.3901/CJME.2014.02.219
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