Numerical material testing for strength evaluation of polycrystalline metals

Kenjiro Terada, Ikumu Watanabe

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

Abstract

A method of numerical material testing is developed for evaluating the macroscopic yield strength of steel products after cold working process. The method is realized by the micro-macro decoupled analyses based on the crystal plasticity homogenization method. A unit cell for micro-scale analyses, which is composed of several grains, is regarded as a numerical specimen in this method. After validating the method of decoupled nonlinear homogenization, we devise a stepwise procedure for evaluating the yield strength of steel pipes subjected to cold-working. First, we perform a numerical simulation of a Pilger mill rolling process for a steel pipe. Second, the obtained macroscopic deformation history is applied to the unit cell to obtain the numerical specimens after the forming process. Then, numerical material tests are conducted on the specimens to characterize the anisotropy in macroscopic yield strengths and their results are compared with the experimental data.

Original languageEnglish
Title of host publicationProceedings of 4th International Conference on Multiscale Materials Modeling, MMM 2008
EditorsAnter El-Azab
PublisherDepartment of Scientific Computing, Florida State University
Pages168-173
Number of pages6
ISBN (Electronic)9780615247816
Publication statusPublished - 2008 Jan 1
Event4th International Conference on Multiscale Materials Modeling, MMM 2008 - Tallahassee, United States
Duration: 2008 Oct 272008 Oct 31

Publication series

NameProceedings of 4th International Conference on Multiscale Materials Modeling, MMM 2008

Conference

Conference4th International Conference on Multiscale Materials Modeling, MMM 2008
CountryUnited States
CityTallahassee
Period08/10/2708/10/31

ASJC Scopus subject areas

  • Materials Science(all)

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