Experimental and numerical analysis of multilayered steel sheets upon bending

Tetsuo Oya, Nicolas Tiesler, Seiichiro Kawanishi, Jun Yanagimoto, Toshihiko Koseki

研究成果: Article査読

42 被引用数 (Scopus)


In this study, the bending formability of multilayered steel sheets is evaluated by tensile tests, V-bending tests, and hemming tests. Enhanced formability was observed in these experiments, namely, the constituent high-strength materials were elongated beyond the original fracture strain limit. As a result of this effect, multilayered steel sheets were successfully formed in V-bending tests and even in hemming tests. Observations using a scanning electron microscope verified that no delamination occurred at interfaces. To represent the geometrical features of a multilayered steel sheet, a solid-element model under an isostrain condition was utilized in finite element modeling, where the rule of mixtures was adopted to obtain the flow curve of the constituent high-strength material, and a good agreement with experimental results was observed. Analyses using this finite element model were conducted to investigate the effect of the geometry on the springback of multilayered steel sheets undergoing V-bending.

ジャーナルJournal of Materials Processing Technology
出版ステータスPublished - 2010 11月 1

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • コンピュータ サイエンスの応用
  • 金属および合金
  • 産業および生産工学


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