Robust topology optimization of innovative porous structures by 3D-printer of continuous fiber reinforced plastics

2021 Fiscal Year Final Research Report

• Project/Area Number: 19H00781
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 22:Civil engineering and related fields
• Research Institution: Nagoya University
• Principal Investigator: Kato Junji 名古屋大学, 工学研究科, 教授 (00594087)
• Co-Investigator(Kenkyū-buntansha): 干場 大也 名古屋大学, 工学研究科, 助教 (80847038) ; 小橋 真 名古屋大学, 工学研究科, 教授 (90225483) ; 北根 安雄 京都大学, 工学研究科, 准教授 (10444415)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: トポロジー最適化 / 積層造形 / 3Dプリンター

Outline of Final Research Achievements

In many industries, the introduction of additive manufacturing is being considered. Recently, continuous fiber 3D printer has also been developed and paid attention to its performance. Under such circumstances, surprising experimental results were shown that a structure with a complex shape in which a porous structure formed by additive manufacturing is embedded exhibits a load bearing capacity that is about five times that of a conventional structure. However, under uncertainties such as manufacturing variations and load fluctuations, its performance cannot be stably brought out. Therefore, in this research, in order to bring out the excellent performance stably and to the maximum, we developed a new topology optimum method which can find a robust optimum porous structure.

Free Research Field

計算力学・トポロジー最適化

Academic Significance and Societal Importance of the Research Achievements

将来の生産労働者人口の減少を鑑み、宇宙航空，自動車，機械，建設，医工学の分野において，ロボットや積層造形を活用した革新的なものづくりが検討されているが，その構造はこれまでのものとは大きく異なり，従来型の設計法では力学的に価値ある構造を設計できない．そのため，本研究ではトポロジー最適化理論に基づいて，合理的な構造形状を数理的に求める手法を開発した．開発した手法は，力学性能に優れた構造を生み出すとともに，様々な分野に応用できる汎用性の高さを有するものであるため，今後の革新的なものずくりに寄与するものと考えられる．