Modeling the size effect in ultra-precision machining by mechanism-based strain gradient crystal plasticity

Wing Bun Lee, Y. P. Chen, Suet To

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In ultra-precision machining, indentation and/or burnishing by the tool-edge of cutting tool occurs. This gives rise to complex elastic and plastic deformation in the machining surface such as materials swelling which is found to be pronounced when the depth cut is small. The size effect observed in ultra-precision machining with a depth of cut from 100 nm and above is simulated by the micro-scratching experiment of FCC single crystals based on the mechanism-based strain gradient crystal plasticity (MSG-CP). The size effect in mico-scratching of an FCC single crystal is studied by measuring the ratio of the thrust force to the projected area of contact between the cutting tool and the work-piece by varying the depth of scratching at the submicron scale. The simulation results demonstrate the effectiveness of the MSG-CP model in studying the scale dependent problems in ultra-precision machining.
Original languageEnglish
Title of host publicationProceedings of the 10th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2010
Publishereuspen
Pages193-197
Number of pages5
Volume2
ISBN (Electronic)9780955308284
Publication statusPublished - 1 Jan 2010
Event10th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2010 - Delft, Netherlands
Duration: 31 May 20104 Jun 2010

Conference

Conference10th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2010
Country/TerritoryNetherlands
CityDelft
Period31/05/104/06/10

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Materials Science(all)
  • Environmental Engineering
  • Mechanical Engineering
  • Instrumentation

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