Multiscale deep drawing analysis of dual-phase steels using grain cluster-based RGC scheme

D. D. Tjahjanto, P. Eisenlohr, F. Roters

Research output: Contribution to journalArticle

Abstract

Multiscale modelling and simulation play an important role in sheet metal forming analysis, since the overall material responses at macroscopic engineering scales, e.g. formability and anisotropy, are strongly influenced by microstructural properties, such as grain size and crystal orientations (texture). In the present report, multiscale analysis on deep drawing of dual-phase steels is performed using an efficient grain cluster-based homogenization scheme. The homogenization scheme, called relaxed grain cluster (RGC), is based on a generalization of the grain cluster concept, where a (representative) volume element consists of p q r (hexahedral) grains. In this scheme, variation of the strain or deformation of individual grains is taken into account through the, so-called, interface relaxation, which is formulated within an energy minimization framework. An interfacial penalty term is introduced into the energy minimization framework in order to account for the effects of grain boundaries. The grain cluster-based homogenization scheme has been implemented and incorporated into the advanced material simulation platform DAMASK, which purposes to bridge the macroscale boundary value problems associated with deep drawing analysis to the micromechanical constitutive law, e.g. crystal plasticity model. Standard Lankford anisotropy tests are performed to validate the model parameters prior to the deep drawing analysis. Model predictions for the deep drawing simulations are analyzed and compared to the corresponding experimental data. The result shows that the predictions of the model are in a very good agreement with the experimental measurement.

LanguageEnglish (US)
Article number045005
JournalModelling and Simulation in Materials Science and Engineering
Volume23
Issue number4
DOIs
StatePublished - Jun 1 2015

Profile

deep drawing
Deep drawing
Steel
steels
homogenizing
Homogenization
Energy Minimization
Anisotropy
Metal forming
Multiscale Simulation
Formability
Crystal Plasticity
Sheet Metal Forming
metal forming
Sheet metal
Multiscale Modeling
anisotropy
optimization
Multiscale Analysis
metal sheets

Keywords

  • dual-phase steels
  • homogenization scheme
  • polycrystalline plasticity
  • sheet metal forming

ASJC Scopus subject areas

  • Modeling and Simulation
  • Condensed Matter Physics
  • Materials Science(all)
  • Mechanics of Materials
  • Computer Science Applications

Cite this

Multiscale deep drawing analysis of dual-phase steels using grain cluster-based RGC scheme. / Tjahjanto, D. D.; Eisenlohr, P.; Roters, F.

In: Modelling and Simulation in Materials Science and Engineering, Vol. 23, No. 4, 045005, 01.06.2015.

Research output: Contribution to journalArticle

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