TAKEZAWA, Akihiro

写真a

Affiliation

Faculty of Science and Engineering, School of Fundamental Science and Engineering

Job title

Associate Professor

Homepage URL

http://home.hiroshima-u.ac.jp/akihiro/index_jp.html

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Concurrent Post 【 display / non-display 】

  • Faculty of Science and Engineering   Graduate School of Fundamental Science and Engineering

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Research Institute 【 display / non-display 】

  • 2020
    -
    2022

    理工学術院総合研究所   兼任研究員

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Education 【 display / non-display 】

  • 2009.03
    　
    　

    博士(工学) 取得 京都大学  

  • 2003.04
    -
    2005.03

    Kyoto University   Graduate School of Engineering  

  • 1999.04
    -
    2003.03

    Kyoto University   Faculty of Engineering   School of Engineering Science  

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Degree 【 display / non-display 】

  • 京都大学   博士(工学)

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Research Experience 【 display / non-display 】

  • 2020.04
    -
    Now

    Waseda University

  • 2010.09
    -
    2020.03

    Hiroshima University   Graduate School of Engineering

  • 2009.08
    -
    2010.08

    Hiroshima University   Graduate School of Engineering

  • 2007.04
    -
    2009.07

    Hiroshima University   Graduate School of Engineering

  • 2005.04
    -
    2007.03

    ファナック株式会社

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Research Areas 【 display / non-display 】

  • Control and system engineering

  • Mechanics of materials and materials

  • Manufacturing and production engineering

  • Machine elements and tribology

  • Design engineering

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Research Interests 【 display / non-display 】

  • 積層造形

  • 構造最適化

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Papers 【 display / non-display 】

  • Optimally Variable Density Lattice to Reduce Warping Thermal Distortion of Laser Powder Bed Fusion

    A. Takezawa, Q. Chen, A. C. To

    Additive Manufacturing   in press  2021.12  [Refereed]

    Authorship：Lead author, Corresponding author

  • Topology optimization of composite macrostructure with multi-phase viscoelastic composite microstructures for enhanced structural damping

    H. Zhang, A. Takezawa, X. Ding, H. Guo, W. Ni, X. Zhang

    Composite Structures   in press  2021.12  [Refereed]

    Authorship：Corresponding author

  • ラティス体積分率分布最適化と金属積層造形による傾斜機能構造体の温度分布設計

    宇惠野 章, Guo Honghu, 森豊 亮太, 竹澤 晃弘, 北村 充

    精密工学会誌   in press  2021.12  [Refereed]

  • Bi-material microstructural design of biodegradable composites using topology optimization

    H. Zhang, A. Takezawa, X. Ding, S. Xu, P. Duan, H. Li, H. Guo

    Materials & Design   209   109973  2021.11  [Refereed]

    Authorship：Corresponding author

    DOI

  • Island scanning pattern optimization for residual deformation mitigation in laser powder bed fusion via sequential inherent strain method and sensitivity analysis

    Q. Chen, H. Taylor, A. Takezawa, X. Liang, X. Jimenez, R. Wicker, A. C. To

    Additive Manufacturing   46   102116  2021.10  [Refereed]

    DOI

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Books and Other Publications 【 display / non-display 】

  • 産業用3Dプリンターの最新技術と先進分野への応用

    竹澤晃弘( Part： Contributor, 第7章第7節:３Ｄプリンターとトポロジー最適化の連携事例)

    技術情報協会  2018.06 ISBN: 9784861047091

  • 熱膨張制御材料の開発と応用

    竹澤晃弘( Part： Contributor, 第10章:人口構造体)

    シーエムシー出版  2018.01 ISBN: 9784781313160

  • 自動車用制振・遮音・吸音材料の最新動向

    竹澤晃弘( Part： Contributor, 第3章第4節:トポロジー最適化による減衰材料の最適配置)

    シーエムシー出版  2018.01 ISBN: 9784781313184

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Misc 【 display / non-display 】

  • A study on optimization of the ship structure which set the number of stiffeners and plate thickness to design variables

      18   3p  2013.06

    CiNii

  • 1118 Optimization of dielectric laser resonator using phase field method

    Takezawa Akihiro, Kitamura Mitsuru

    The Computational Mechanics Conference   2012 ( 25 ) 250 - 251  2012.10

    CiNii

  • 3204 Research on hull structure optimization that considers modulation

    Nakamura Daisuke, Kitamura Mitsuru, Takezawa Akihiro

      2011 ( 21 ) 546 - 547  2011.10

    　View Summary

    The partial modularization of the point is pushed forward for the reduction of the building cost of the engine part and a maintenance performance gain now in the shipbuilding industry. And the conception imagined that in the future, assemble the whole engine part out of the ship, and install in the hull last. However, for this realization, it is necessary to remove some decks and change conventional hull structure greatly, and it is very likely that the strength of the hull and a vibration characteristic change greatly. The study analyzes about strength with to realize the total modularization of the engine room in the future. And the purpose is getting dynamic knowledge leading to suggestion of the new design plan. It is necessary to redesign the hull structure around the engine region radically to get the present conditions and equal performance with aspects of strength and vibration after having realized this modularization. Based on dynamic knowledge provided in this study, utilize structural optimization and design conception ship deployed the new engine room module.

    CiNii

  • 3203 Research on optimization of central section of oil tanker based on CSR

    Miyake Hirotaka, Kitamura Mitsuru, Takezawa Akihiro

      2011 ( 21 ) 543 - 545  2011.10

    　View Summary

    Recently, new rule CSR(Common Structure Rule) was enforced to oil tankers. The design corresponding to CSR is used on an actual site. However, the design based on the experience has been. Therefore, then, it aims at the achievement of the optimum design in a central section of the oil tanker by using the optimization software connected to PrimeShip-HULL effectively. It is used that the restriction condition judgment of PrimeShip-HULL is the one with Excel file. Software Smartoptimization of this laboratory development is used, and optimized. The target function is assumed two one with a different minimum weight and minimum cost, and calculated by a method near an actual calculation. The cost becomes important information to change the design idea in the grasp of a present design proposal and the future because it can show separately by cost.

    CiNii

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Awards 【 display / non-display 】

  • 文部科学大臣表彰若手研究者賞

    2017.04   動的問題に対する構造最適化法とその応用に関する研究

    Winner： 竹澤晃弘

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Research Projects 【 display / non-display 】

  • 振動低減ラティス構造の生産性向上に関する研究

    Project Year :

    2019.10
    -
    2022.03
     

    マツダ株式会社

  • 構造最適化と指向性エネルギー堆積法に基づく負熱膨張金属複合材料の開発

    Project Year :

    2019.03
    -
    2022.03
     

    竹澤晃弘

    Authorship： Principal investigator

  • 構造最適化・積層造形・毛管現象による三次元負熱膨張Ti/Mg複合材料の開発

    Project Year :

    2018.04
    -
    2021.03
     

    竹澤晃弘

    Authorship： Principal investigator

  • 構造最適化を活用した高減衰ラティス構造の応用研究

    Project Year :

    2017.10
    -
    2018.09
     

    竹澤晃弘

    Authorship： Principal investigator

  • カスタムメイド多孔質金属人工関節最適設計システム

    Project Year :

    2015.04
    -
    2017.03
     

    竹澤晃弘

    Authorship： Principal investigator

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Specific Research 【 display / non-display 】

  • 金属積層造形の熱変形抑制に向けた高精度固有ひずみ法とラティス構造最適化法の研究

    2020  

    　View Summary

    　近年，次世代の加工技術として金属積層造形が注目を集めており，試作のみならず量産最終製品にも使用されるようになっている．しかし，金属積層造形においては熱変形が問題になる．この熱変形を近似的に推定する方法として、固有ひずみ法が近年開発されている．本研究では、熱変形の抑制に密度・剛性分布を適所で変更可能なラティス構造を適用することを考え，固有ひずみ法とラティス構造の密度分布を最適化する構造最適化法を組み合わせ，金属積層造形における低熱変形構造の最適設計法を構築した．具体的には，固有ひずみ法は有限要素解析と実際の金属積層造形の熱変形計測を通じてモデルを構築した．そのモデルをラティス構造の密度分布最適化アルゴリズムに組み込み，最適設計法を構築した．

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Syllabus 【 display / non-display 】

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