Methodenaufbau zur Beschreibung eines nichtquadratischen Fließortes

Publikation: AbschlussarbeitMasterarbeit


The issue of this master thesis is, to develop methods for describing a non-quadratic yield locus. Through rolling processes during the manufacturing, sheet metals are often anisotropic. Common yield loci, like `von Mises' or `Hill 48' cannot describe the anisotropy. Especially in numerical investigations of forming processes, where complex stress states occur, a detailed description of the yield locus is essential. Particularly when important issues, for example the thinning of a sheet metal of a deep drawn part, have to be predicted. The yield locus description chosen is the `Bron-Besson 2004'. This yield locus is formulated with several coe cients. To identify these coe cients' extensive material, testing has to be carried out. For example tensile tests in three di erent orientations to the sheet metal rolling direction (0°, 45°, 90°). After tagging the material parameters, the identi cation of the yield locus coe cient is performed by minimizing an error square sum. The numerical simulation results are compared with material-testing-results and real deep drawn parts which are measured by optical devices.
Gradverleihende Hochschule
  • Upper Austria University of Applied Sciences
Betreuer/-in / Berater/-in
  • Steinbatz, Michael, Betreuer:in, Externe Person
PublikationsstatusVeröffentlicht - 2011

Research Field

  • Nicht definiert

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