Crystallographic effects during micromachining - A finite-element model

Shin Hyung Song, Woo Chun Choi

Research output: Contribution to journalArticle

Abstract

Mechanical micromachining is a powerful and effective way for manufacturing small sized machine parts. Even though the micromachining process is similar to the traditional machining, the material behavior during the process is much different. In particular, many researchers report that the basic mechanics of the work material is affected by microstructures and their crystallographic orientations. For example, crystallographic orientations of the work material have significant influence on force response, chip formation and surface finish. In order to thoroughly understand the effect of crystallographic orientations on the micromachining process, finite-element model (FEM) simulating orthogonal cutting process of single crystallographic material was presented. For modeling the work material, rate sensitive single crystal plasticity of face-centered cubic (FCC) crystal was implemented. For the chip formation during the simulation, element deletion technique was used. The simulation model is developed using ABAQUS/explicit with user material subroutine via user material subroutine (VUMAT). Simulations showed that variation of the specific cutting energy at different crystallographic orientations of work material shows significant anisotropy. The developed FEM model can be a useful prediction tool of micromachining of crystalline materials.

Original languageEnglish
Article number1550119
JournalModern Physics Letters B
Volume29
Issue number22
DOIs
Publication statusPublished - 2015 Aug 20

Fingerprint

micromachining
subroutines
chips
deletion
simulation
plastic properties
machining
manufacturing
microstructure
anisotropy
single crystals
predictions
crystals
energy

Keywords

  • computer simulation
  • crystal plasticity
  • FEM
  • machining
  • metals

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics

Cite this

Crystallographic effects during micromachining - A finite-element model. / Song, Shin Hyung; Choi, Woo Chun.

In: Modern Physics Letters B, Vol. 29, No. 22, 1550119, 20.08.2015.

Research output: Contribution to journalArticle

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