Numerical examination of residual stresses developing during hard turning at different rake angles

J. Kundrák, Athanssios G. Mamalis, Gergely Szabó, Zoltán Pálmai, Károly Gyáni

Research output: Article

5 Citations (Scopus)

Abstract

This paper examines the feed direction of residual stresses developed in the machined surface during hard turning with a negative rake angle. The examination was carried out by finite element simulation with varying rake angles of the tool, using the Lee-Shaffer chip root model further developed by Fang. Furthermore, the sawtooth character of the chip is taken into consideration. In the simulations, the rake angle of the tool was gradually changed in order to study the relationship between residual stresses and the force components emerging in the chip root and to determine the change of shear plane characterised by the extent of the stagnation zone. The results indicate that for negative rake angles, residual stresses are compressive. Their magnitude and penetration within the workpiece depends on the rake angle. For higher negative rake angles, the stagnation zone extents and compressive residual stresses increase, reaching a maximum of 1200 MPa for a −30° rake angle.

Original languageEnglish
Pages (from-to)1989-1999
Number of pages11
JournalInternational Journal of Advanced Manufacturing Technology
Volume89
Issue number5-8
DOIs
Publication statusPublished - márc. 1 2017

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

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