Methodology and applications of mesoplasticity in manufacturing sciences

Lee, Wing Bun; Yang, Wei

doi:10.1016/0020-7403(93)90057-2

Cited by 6 publications

(1 citation statement)

References 27 publications

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“…It is becoming clear that limit strains are governed by local events and the dynamic microstructures such as dislocations and grain re-orientations. Mesoplasitcity as proposed by Lee and Yang [4,5] aims at introducing the essential microplasticity concepts to various intermediate (or meso-scales) and represents an important connection between the continuum-based macroplasticity and the atomistic physical theory of plasticity. It helps to provide a scientific framework to understand the design and processing of materials on the micro-scale to achieve the macroscopic properties.…”

Section: Introductionmentioning

confidence: 99%

Mesoplasticity and Its Applications in Micro-Scale Deformation Processing

Lee

2004

KEM

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In micro-scale, mechanical fabrication manufacturing, the size of the deformation zone approaches the grain size of the workpiece materials and the mechanics cannot be adequately described by the macroscopic theory of plasticity. Mesoplasticity represents an important connection between the continuum based macroplasticity and the atomic physical theory of plasticity. In this paper, the methodology of mesoplasticity is highlighted and two examples of applications, with one in micro-sheet metal forming and one in micro-machining. The analysis demonstrates the strong grain orientation dependency of the workability of materials in micro-scale deformation processes.

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Section: Introductionmentioning

confidence: 99%

Mesoplasticity and Its Applications in Micro-Scale Deformation Processing

Lee

2004

KEM

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Variation of cutting forces in machining of f.c.c. single crystals

2015

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In this study, micro-machining of f.c.c single-crystal materials was investigated based on a hybrid modelling approach combining smoothed particle hydrodynamics and continuum finite element analysis. The numerical modelling was implemented in a commercial software ABAQUS/Explicit by employing a user-defined subroutine VUMAT for a crystal-plasticity formulation to gain insight into the underlying mechanisms that drive a plastic response of materials in highdeformation processes. The numerical studies demonstrate that cutting-force variations in different cutting directions are similar for different f.c.c. crystals even though the magnitudes of the cutting forces are different.

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