A user-friendly 3D yield function for steel sheets and its application

Fusahito Yoshida, Shohei Tamura, Takeshi Uemori, Hiroshi Hamasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A 6th-order polynomial type 3D yield function, which has a high flexibility of describing anisotropic behavior of steel sheets is proposed. A user-friendly scheme of material parameter identification for the model, where only limited experimental data of r-values and yield stresses in three directions ( r 0, r45, r90 and μ0, μ4590) plus equi-biaxial yield stress (μxyb) are needed, is presented. The accuracy of this yield function is verified by comparing the numerical predictions with the corresponding experimental data on planar anisotropy of r-values and flow stress directionality, as well as the shape of yield loci, on several types of steel sheets (high r-value IF steel and high strength steel sheets of 440-980MPa TS levels). The advantage of this model is demonstrated by showing a numerical simulation of hole-expansion test.

Original languageEnglish
Title of host publication8th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2011
Pages807-814
Number of pages8
DOIs
Publication statusPublished - Sep 19 2011
Externally publishedYes
Event8th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2011 - Seoul, Korea, Republic of
Duration: Aug 21 2011Aug 26 2011

Publication series

NameAIP Conference Proceedings
Volume1383
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other8th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2011
CountryKorea, Republic of
CitySeoul
Period8/21/118/26/11

Keywords

  • Anisotropy
  • Sheet metal forming
  • Yield function

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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