validation of advanced material models using the crossdie test

H.H. Wisselink, Muhammad Sohail Niazi, Han Huetink

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Abstract

The crossdie test, i.e. deepdrawing with cross shaped tools, is used in industryto asses the formability of the sheet material. The strain path of the material in this test is non-proportional. The effect of strain path changes can be modelled with the Teodosiu &Hu model. Therefore this model is applied to describe the Bauschinger and cross hardening effects present in the crossdie test to improve the simulation results. Less ductile materials, such as high strength steels or aluminium, show already ductile damage before necking. Therefore damage should be included in the material models to predict failure accurately. An anisotropic continuum damage model is used to simulate the crossdie test. In this model damage is not a scalar but a second order tensor, which means that the softening has a different effect in different directions.Results of simulations using both advanced material models and a simple materialmodel will be compared with a set of experimental data. The predictions of forming processes can be improved further if both damage and strain path changes are included in the simulations.
Original languageEnglish
Title of host publicationTowards sustainable sheet forming processes
EditorsM Gutierrez
Place of Publicationbilbao
PublisherInternational Deep Drawing Research Group, IDDRG
Pages1-10
Publication statusPublished - 5 Jun 2011
Event15th International Deep Drawing Research Group Conference 2011: Towards sustainable sheet forming processes - Bilbao, Spain
Duration: 5 Jun 20118 Jun 2011
Conference number: 15

Publication series

Name
PublisherInternational Deep Drawing Research Group, IDDRG

Conference

Conference15th International Deep Drawing Research Group Conference 2011
Abbreviated titleIDDRG 2011
CountrySpain
CityBilbao
Period5/06/118/06/11

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Keywords

  • Anisotropic damage
  • METIS-276559
  • Teodosiu&Hu
  • IR-77406
  • crossdie test
  • Strain path changes

Cite this

Wisselink, H. H., Niazi, M. S., & Huetink, H. (2011). validation of advanced material models using the crossdie test. In M. Gutierrez (Ed.), Towards sustainable sheet forming processes (pp. 1-10). bilbao: International Deep Drawing Research Group, IDDRG.