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  1. 学術雑誌掲載済論文
  2. 洋雑誌

A Multiscale Approach for Modeling Scale-Dependent Yield Stress in Polycrystalline Metals

https://kitami-it.repo.nii.ac.jp/records/6819
2c45cebb-cf6a-48cb-8c13-486c14f19ac9
名前 / ファイル ライセンス アクション
5042.pdf 5042.pdf (549.5 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2007-04-17
タイトル
言語 en
タイトル A Multiscale Approach for Modeling Scale-Dependent Yield Stress in Polycrystalline Metals
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
著者 Ohashi, Tetsuya

× Ohashi, Tetsuya

WEKO 34436

en Ohashi, Tetsuya

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Kawamukai, Masato

× Kawamukai, Masato

WEKO 34437

ja Kawamukai, Masato

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Zbib, Hussein

× Zbib, Hussein

WEKO 34438

en Zbib, Hussein

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著者別名
姓名
姓名 大橋, 鉄也
言語 ja
抄録
内容記述タイプ Abstract
内容記述 Modeling of scale-dependent characteristics of mechanical properties of metal polycrystals is studied using both discrete dislocation dynamics and continuum crystal plasticity. The initial movements of dislocation arc emitted from a Frank-Read type dislocation source and bounded by surrounding grain boundaries are examined by dislocation dynamics analyses system and we find the minimum resolved shear stress for the FR source to emit at least one closed loop. When the grain size is large enough compared to the size of FR source, the minimum resolved shear stress levels off to a certain value, but when the grain size is close to the size of the FR source, the minimum resolved shear stress shows a sharp increase. These results are modeled into the expression of the critical resolved shear stress of slip systems and continuum mechanics based crystal plasticity analyses of six-grained polycrystal models are made. Results of the crystal plasticity analyses show a distinct increase of macro- and microscopic yield stress for specimens with smaller mean grain diameter. Scale-dependent characteristics of the yield stress and its relation to some control parameters are discussed.
書誌情報 International Journal of Plasticity

巻 23, 号 5, p. 897-914, 発行日 2007-05
DOI
関連識別子
識別子タイプ DOI
関連識別子 http://doi.org/10.1016/j.ijplas.2006.10.002
権利
権利情報 http://www.sciencedirect.com/science/journal/07496419
権利
権利情報 Elsevier Ltd., Tetsuya Ohashi, Masato Kawamukai and Hussein Zbib, International Journal of Plasticity, 23(5), 2007, 897-914.
フォーマット
内容記述タイプ Other
内容記述 application/pdf
出版者
出版者 ELSEVIER
著者版フラグ
値 author
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
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