Finite element study of the cutting mechanics of the three dimensional rock turning process

Demeng Che, Jacob Smith, Kornel Ehmann

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

The unceasing improvements of polycrystalline diamond compact (PDC) cutters have pushed the limits of tool life and cutting efficiency in the oil and gas drilling industry. However, the still limited understanding of the cutting mechanics involved in rock cutting/drilling processes leads to unsatisfactory performance in the drilling of hard/abrasive rock formations. The Finite Element Method (FEM) holds the promise to advance the in-depth understanding of the interactions between rock and cutters. This paper presents a finite element (FE) model of three-dimensional face turning of rock representing one of the most frequent testing methods in the PDC cutter industry. The pressure-dependent Drucker-Prager plastic model with a plastic damage law was utilized to describe the elasticplastic failure behavior of rock. A newly developed face turning testbed was introduced and utilized to provide experimental results for the calibration and validation of the formulated FE model. Force responses were compared between simulations and experiments. The relationship between process parameters and force responses and the mechanics of the process were discussed and a close correlation between numerical and experimental results was shown.

Original languageEnglish (US)
Title of host publicationProcessing
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791856826
DOIs
StatePublished - Jan 1 2015
EventASME 2015 International Manufacturing Science and Engineering Conference, MSEC 2015 - Charlotte, United States
Duration: Jun 8 2015Jun 12 2015

Publication series

NameASME 2015 International Manufacturing Science and Engineering Conference, MSEC 2015
Volume1

Other

OtherASME 2015 International Manufacturing Science and Engineering Conference, MSEC 2015
CountryUnited States
CityCharlotte
Period6/8/156/12/15

Keywords

  • Finite element analysis
  • Polycrystalline diamond compact
  • Rock cutting mechanics
  • Rock turning

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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