Estimation of plateau stress of porous aluminum based on mean stress on maximum-porosity cross section

Takao Utsunomiya, Ryo Yamaguchi, Yoshihiko Hangai, Osamu Kuwazuru, Nobuhiro Yoshikawa

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Porous aluminum with high porosity is very lightweight and has high energy absorptivity. Plateau stress is an important mechanical property that is closely related to the energy absorptivity of porous aluminum. In this study, we attempt to estimate the plateau stress of porous aluminum by simply assuming that when the mean true compressive stress on a maximum-porosity cross section perpendicular to the direction of compressive loading reaches the critical value, a locally deformed layer appears and the nominal compressive stress becomes equal to the plateau stress. Through the comparison of compressive test results with the estimated results obtained according to this assumption, it was shown that the plateau stress can be evaluated approximately when the proof stress is used as the critical value.

本文言語English
ページ(範囲)1182-1186
ページ数5
ジャーナルMaterials Transactions
54
7
DOI
出版ステータスPublished - 2013

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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