マグネシウム合金製円管の衝撃エネルギー吸収特性  [in Japanese] Impact Energy Absorption Capability of Magnesium Alloy Pipe  [in Japanese]

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Author(s)

    • 上田 哲也 Ueda Tetsuya
    • 神戸大学大学院工学研究科機械工学専攻 Department of Mechanical Engineering, Graduate School of Engineering, Kobe University
    • 長尾 昌樹 Nagao Masaki
    • 神戸大学大学院工学研究科機械工学専攻 Department of Mechanical Engineering, Graduate School of Engineering, Kobe University
    • 池尾 直子 [他] Ikeo Naoko
    • 神戸大学大学院工学研究科機械工学専攻 Department of Mechanical Engineering, Graduate School of Engineering, Kobe University
    • 鷲尾 宏太 Washio Kota
    • トヨタ自動車株式会社先端材料技術部 Advanced Materials Engineering Division, Toyota Motor Corporation
    • 加藤 晃 Kato Akira
    • トヨタ自動車株式会社先端材料技術部 Advanced Materials Engineering Division, Toyota Motor Corporation
    • 向井 敏司 Mukai Toshiji
    • 神戸大学大学院工学研究科機械工学専攻 Department of Mechanical Engineering, Graduate School of Engineering, Kobe University

Abstract

  Weight reduction is effective for improving fuel efficiency of automobiles. Although magnesium is widely recognized as the lightest structural metal, applications for the automobile are limited because of the relatively low ductility, toughness, impact resistance and fatigue resistance. The aim of this research was to evaluate the impact energy absorption capability of a magnesium alloy pipe by a numerical simulation. First of all, finite element (FE) analysis of impact compression of magnesium alloy pipes was performed to design the shape of anvils for a dynamic compression experiment. The compression tests were conducted at a high strain rate on two Mg alloys, AZ31 and Mg-0.6Y, to examine the deformation response. The load-displacement data obtained were compared with the results of FE analysis to validate the simulation. The FE analysis revealed that the AZ31 pipe fractured at an early stage of deformation, while the Mg-0.6Y pipe fractured at about 90% compressed. As a result, Mg-0.6Y pipe exhibited lower yield strength, but a higher absorption energy capability than AZ31 pipe due to a weakened basal texture.<br>

Journal

  • Journal of the Japan Institute of Metals and Materials

    Journal of the Japan Institute of Metals and Materials 78(4), 142-148, 2014

    The Japan Institute of Metals and Materials

Codes

  • NII Article ID (NAID)
    130004456422
  • NII NACSIS-CAT ID (NCID)
    AN00062446
  • Text Lang
    JPN
  • ISSN
    0021-4876
  • NDL Article ID
    025443969
  • NDL Call No.
    Z17-314
  • Data Source
    NDL  J-STAGE 
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