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Experimental and computational investigation of machining processes for functionally graded materials

På svenska

Author

  • Dirk Biermann
  • Andreas Menzel
  • Thorsten Bartel
  • Franziska Höhne
  • Raphael Holtermann
  • Richard Ostwald
  • Benjamin Sieben
  • Marcel Tiffe
  • Andreas Zabel

Summary, in English

Experiments on dry face turning offunctionallygraded heat treatable steel are conducted. The workpieces have a hardened zone of approx. 60 HRC and a non-hardened zone of approx. 30 HRC. PCBN tools are used with different feeds, cutting speeds and depths of cut. Measurements of residual stresses in the surface layer reveal compressive stresses in the hardened zone and tensile stresses in the non-hardened zone. These experimental observations are compared with the results of representative simulations of the cutting process. A large-deformation thermo-elasto-viscoplastic material model is used and the geometry of the cutting tool is precisely reflected by the finite element discretisation. To predict the overall response, an adaptive remeshing scheme and full thermo-mechanical coupling is accounted for. Moreover, measured residual stresses are incorporated as initial conditions within the simulation.

Department/s

Publishing year

2011

Language

English

Pages

22-27

Publication/Series

Procedia Engineering

Volume

19

Document type

Journal article

Publisher

Elsevier

Topic

  • Mechanical Engineering

Keywords

  • Finite element method (FEM)
  • Turning
  • Residual stresses
  • Functionallygradedmaterials
  • Remeshing

Status

Published

ISBN/ISSN/Other

  • ISSN: 1877-7058