High strain rate deformation behaviour of steels for auto-body

Hiroshi Takechi, Manabu Takahashi, Kouichi Ito, Takao Endo, Yo Tomota

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)


It has been one of the major interests in automobile industries to improve crashworthiness of auto-bodies as well as the fuel consumption. Crash energy absorption of a component depends not only on the geometry but also the mechanical properties of the materials used. Buckling of thin wall tube structures, which is a typical example of the deformation during crash, is studied theoretically to clarify the effect of strain rate dependence of flow stress. Geometrical and material factors that control the energy absorbing property of components are reviewed. Flow stress at a strain rate up to approximately 103/s can be estimated by using thermal activation models for dislocation motion. Theoretical background and problems remained for application of the models are briefly reviewed. These methods are of use for machine design coupled with materials selection and/or development when high-speed deformation like automobile collision is taken into consideration.

ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
出版ステータス出版済み - 11 2002

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 物理化学および理論化学
  • 金属および合金
  • 材料化学


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