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Thermo-elastoplastic constiturive modelling considering phase transformation and numeriacl simulation of hot stamping process

Research Project

Project/Area Number 23560116
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Production engineering/Processing studies
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

NAGAKI Shigeru  東京農工大学, 工学(系)研究科(研究院), 教授 (30135959)

Co-Investigator(Kenkyū-buntansha) OSHITA Kenichi  東京農工大学, 大学院工学研究院, 助教 (60334471)
Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords変態塑性 / 熱弾塑性構成式 / マルテンサイト変態 / パーライト変態 / 変態塑性係数 / ホットプレス
Research Abstract

In order to establish the simulation method for hot stamping process, the deformation behavior of steels accompanied by phase transformation were measured under bi-axial stress state. It was found that the transformation plastic deformations during pearlite transformation of S45C are different in tension and compression stress state. The proposed new constitutive equation for TRIP can predict these anisotropic deformation behavior. The bending test method to measure the TRIP coefficient was also established and the pre-plastic deformation prior to phase transformation will give the enormous effects to the TRIP deformation. Furthermore, the new constitutive equation was introduced to the commercial FE code and the bending deformation during the cooling process was simulated by proposed method.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (12 results)

All 2014 2013 Other

All Presentation (12 results) (of which Invited: 1 results)

  • [Presentation] 曲げー引張複合荷重下における変態塑性の評価2014

    • Author(s)
      HAMDAM M. Arif,NAGAKI Shigeru,OSHITA Kenichi
    • Organizer
      日本機械学会関東支部第20期総会・講演会
    • Place of Presentation
      東京農工大学(講演番号20108)
    • Year and Date
      2014-03-15
    • Related Report
      2013 Final Research Report
  • [Presentation] 鋼の2軸応力下における変態塑性挙動モデリング2014

    • Author(s)
      山本裕太,引田直樹,大下賢一,長岐滋
    • Organizer
      日本機械学会関東支部第20期総会・講演会
    • Place of Presentation
      東京農工大学(講演番号20107)
    • Year and Date
      2014-03-15
    • Related Report
      2013 Final Research Report
  • [Presentation] 三点曲げ試験における変態塑性挙動に関する研究2013

    • Author(s)
      HAMDAM M. Arif,OHUE Hiroto,NAGAKI Shigeru,OSHITA Kenichi
    • Organizer
      日本機械学会M&M2013材料力学カンフアレンス
    • Place of Presentation
      岐阜大学(講演番号OS202)
    • Year and Date
      2013-10-12
    • Related Report
      2013 Final Research Report
  • [Presentation] 鋼の引張・圧縮・ねじり応力下における変態塑性挙動の実験的検討2013

    • Author(s)
      引田直樹,小室裕貴,寒河江秀太,長岐滋,大下賢一
    • Organizer
      日本機械学会M&M2013材料力学カンフアレンス
    • Place of Presentation
      岐阜大学(講演番号OS201)
    • Year and Date
      2013-10-12
    • Related Report
      2013 Final Research Report
  • [Presentation] 鋼の引張・圧縮・ねじり応力下における変態塑性挙動の実験的検討

    • Author(s)
      引田直樹・小室裕貴・寒河江秀太・長岐滋・大下賢一
    • Organizer
      日本機械学会M&M2013材料力学部門講演会
    • Place of Presentation
      岐阜大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 三点曲げ試験における変態塑性挙動に関する研究

    • Author(s)
      HAMDAM Mohammad Arif・OHUE Hiroto・NAGAKI Shigeru・OSHITA Kenichi
    • Organizer
      日本機械学会M&M2013材料力学部門講演会
    • Place of Presentation
      岐阜大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 曲げ―引張複合荷重下における変態塑性の評価

    • Author(s)
      HAMDAM Mohammad Arif・NAGAKI Shigeru・OSHITA Kenichi
    • Organizer
      日本機械学会関東支部第20期総会講演会
    • Place of Presentation
      東京農工大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 鋼の2軸応力下における変態塑性挙動モデリング

    • Author(s)
      山本裕太・引田直樹・大下賢一・長岐滋
    • Organizer
      日本機械学会関東支部第20期総会講演会
    • Place of Presentation
      東京農工大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 曲げおよび2軸応力場における変態塑性の実験的検討

    • Author(s)
      長岐滋
    • Organizer
      日本材料学会塑性工学部門委員会材料データベース研究分科会
    • Place of Presentation
      京都 日本材料学会3階会議室
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] 鋼の引張・ねじり2軸応力下における変態塑性挙動の実験的検討

    • Author(s)
      引田直樹・小室裕樹・長岐滋・大下賢一
    • Organizer
      日本材料学会第61期学術講演会
    • Place of Presentation
      岡山大学 津島キャンパス
    • Related Report
      2012 Research-status Report
  • [Presentation] 曲げ変形におけるマルテンサイト変態時の変態塑性挙動の実験的検討

    • Author(s)
      梶原雄三・長岐滋・大下賢一
    • Organizer
      日本機械学会第24回計算力学講演会
    • Place of Presentation
      岡山大学
    • Related Report
      2011 Research-status Report
  • [Presentation] 引張り・ねじり2軸応力下の変態塑性変形

    • Author(s)
      長岐滋,小室裕貴,引田直樹,大下賢一
    • Organizer
      第61回理論応用力学講演会
    • Place of Presentation
      東京大学生産技術研究所
    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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