2023 Fiscal Year Final Research Report
Development of a meshfree-molecular dynamics hybrid analysis method bridging continuum and non-continuous body
| Project/Area Number |
21K03772
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 18010:Mechanics of materials and materials-related
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| Research Institution | Saga University |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | マルチスケール解析 / メッシュフリー法 / 分子動力学法 |
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| Outline of Final Research Achievements |
To analyze physical phenomena from atomic to continuum scales with a unified numerical scheme and to elucidate the mechanisms of continuum-to-discontinuous body transitions in the deformation of solid materials, a novel meshfree-molecular dynamics hybrid analysis method that bridges atoms and continua behaviors seamlessly. In the meshfree method, which is a continuum analysis method, a material point consists of a continuum body and can be treated as a discreate point. Using this feature of the meshfree method, a concept of hybrid material point, which has both continuum and atom properties, is proposed and a hybrid analysis method that bridges continuum and discontinuous body without any contradiction has been developed.
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| Free Research Field |
計算固体力学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究課題で提案した解析手法により，従来手法では困難であった連続体，不連続体の両者と矛盾なく接続する数値解析が可能となった．これにより，固体材料の変形における連続体から不連続体へ，もしくは不連続体から連続体への遷移のメカニズムを明らかにするための新たな枠組みを構築できたがことが，本研究の学術的意義である．今後，提案手法を種々の材料の変形挙動解析に適用することで，高性能な構造材料創製のためのシミュレーション技術の確立や，種々の塑性加工解析の高精度化へと展開可能な工業的応用の可能性も秘めていることが，本研究の社会的意義である．
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