Multiscale simulation on nanometric cutting of single crystal copper

Sun, Xizhi; Chen, Shijin; Cheng, Kai; Huo, Dehong; Chu, W. K.

doi:10.1243/09544054jem540sc

Cited by 38 publications

(18 citation statements)

References 13 publications

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“…The emerging multiscale modelling will likely play an important role in the characterization of the machining process at reduced size scales, particularly in explaining phenomenological effects across the nano-micro-meso continuum [15]. To date, however, few multiscale simulation has been applied to the machining process [6,16], although it shows considerable promise for dealing with the multiplicity of issues that arise over multiple scales in the machining process. Several multiscale simulation methods have been developed such as the FEAt method, the Quasicontinuum (QC) method, the MAAD method, and the CGMD method, although they are merely applied in other domains.…”

Section: Introductionmentioning

confidence: 99%

Multi-scale simulation of the nano-metric cutting process

Sun

Cheng

2009

Int J Adv Manuf Technol

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Molecular dynamics (MD) simulation and finite element (FE) method are two popular numerical techniques for the simulation of machining processes. The two methods have their own strengths and limitations. The MD simulation can cover the phenomena occurring at nanometric scale lengths but limited by the computational cost and capacity, while FE method is suitable for modelling the meso to macro scale machining and for simulating macro parameters such as the temperature in a cutting zone, the stress/strain distribution and cutting forces, etc. With the successful application of multiscale simulations in many research fields, the application to simulate machining processes is emerging particularly in relation to the machined surface generation and integrity formation, i.e. the machined surface roughness, residual stress, microhardness, microstructure and fatigue.Based on the Quasicontinuum (QC) method, the multiscale simulation of nanometric cutting has been proposed. Cutting simulations are performed on single crystal aluminium to investigate the chip formation, generation and propagation of the material dislocation during the cutting process. In addition, the effect of the tool rake angle on cutting force and internal stress under the workpiece surface is investigated. The cutting force and internal stress in the workpiece material decrease with the increase of the rake angle. Finally, to ease and speed up multiscale modelling and simulation steps, a computing efficient MATLAB-based program has been developed, which facilitates the geometrical cutting modelling, simulation conditions, implementation of simulation and results analysis within a unified integrated virtual simulation environment.

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Section: Introductionmentioning

confidence: 99%

Multi-scale simulation of the nano-metric cutting process

Sun

Cheng

2009

Int J Adv Manuf Technol

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“…Multiscale simulation has been developed to bridge the gap between the MD and FEM simulation. It was applied by Son [48] and Pen [49] et al to simulate the nano-cutting of single-crystal copper. Based on the development of the numerical method, the micro/nano-cutting mechanism would be fully revealed in the future.…”

Section: Methodsmentioning

confidence: 99%

Recent Advances in Micro/Nano-cutting: Effect of Tool Edge and Material Properties

Fang

2018

Nanomanuf Metrol

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Micro-and nano-machining technology has been applied in industry to generate high-precision parts with micro/nanometric accuracy or feature size in the recent decades. Cutting is one of the most powerful manufacturing processes, and the material removal mechanism is urgently demanded by the industry to understand and improve the micro/nano-machining process efficiently at a low cost. This paper presents the recent advances in cutting mechanism and its applicability for predicting the surface generation and chip formation, especially when material is removed in micro-and nanoscale. In addition to the industry-concerned performance parameters, fundamental physical parameters such as stresses, strains, temperatures, phase transformation, minimum uncut chip thickness and size effects are discussed in this paper for the indepth understanding of the micro/nano-cutting process.

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“…The aforementioned QC methods, based on a combined MD-FE technique, can be applied to a multiscale modelling simulation, where MD is only used in localized regions in which the atomic-scale dynamics are important, and a continuum simulation (FE) used everywhere else. For instance, Sun et al [121,122] have applied QC methods to simulate the nanometric cutting of crystal copper. Their study demonstrated that multi-scale simulation is feasible, not withstanding that there is still more work needed to be done to make multi-scale simulation more practical.…”

Section: Multiscale Modelsmentioning

confidence: 99%

Numerical Modelling of Multilayered Coatings – Latest Developments and Applications

Yin

Feng

et al. 2014

Manufacturing Rev.

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-The remarkable mechanical properties of multilayered coatings, such as super-hardness, excellent resistance against cracking, low wear-rate and high thermal-stability, are due to their unique interfacial structures and deformation mechanisms at the nanometer scale. The multilayered coating process itself is a typical multi-scale phenomenon. The modelling of multilayered coatings has become an important topic in research recently, largely due to the recent progress that has been made in the numerical modelling of materials and structures at different length-scales as well as the improved effectiveness achieved in linking such progress in numerical modelling to enable multi-scale modelling. In this paper, numerical modelling for the analysis of multilayered coatings at individual lengthscales: Continuum, Molecular and Nano-scale, is reviewed, along with that at multi-scale modelling. Examples are presented showing numerical models obtained using: the Finite Element Method (FEM), Molecular Dynamics (MD), First-principles calculations and Multi-scale modelling, are presented. Their relative limitations are discussed and challenges to their future work highlighted.

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Multiscale simulation on nanometric cutting of single crystal copper

Cited by 38 publications

References 13 publications

Multi-scale simulation of the nano-metric cutting process

Multi-scale simulation of the nano-metric cutting process

Recent Advances in Micro/Nano-cutting: Effect of Tool Edge and Material Properties

Numerical Modelling of Multilayered Coatings – Latest Developments and Applications

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