Modelling of frictional chatter in metal cutting

R. Rusinek*, M. Wiercigroch, P. Wahi

*Corresponding author for this work

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A new model of cutting process is developed in order to simplify modelling and gain a further insight into the mechanics of frictional chatter. It is based on the well known Rayleigh oscillator generating self-excited oscillations and has been applied to the shaping/planning operation. The new approach which takes into account also the forces acting on the tool flank is compared with the one developed by Wiercigroch and Krivtsov [1]. The results obtained here are alike to a certain degree but some of them show some different trends. Nonlinear dynamic behaviour is examined by bifurcation diagrams with cutting velocity and specific cutting force coefficient as the bifurcation parameters. The effect of the the tool stiffness variation in the directions parallel and perpendicular to the workpiece has been investigated. Some practical results unveiling stabilizing effects of the friction force on the tool flank have been shown.

Original languageEnglish
Pages (from-to)167-176
Number of pages10
JournalInternational Journal of Mechanical Sciences
Volume89
Early online date28 Aug 2014
DOIs
Publication statusPublished - Dec 2014

Keywords

  • Chatter
  • Cutting process
  • Dry friction
  • Dynamics
  • Modelling

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

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