Creation of Practical CAE System Predicting Mechanical Properties of Advanced Materials on the Basis of Microstructures
| Project/Area Number |
16H06059
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥25,350,000 (Direct Cost: ¥19,500,000、Indirect Cost: ¥5,850,000)
Fiscal Year 2018: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2016: ¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
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| Keywords | 繊維強化熱可塑樹脂 / 超微細粒金属材料 / CAE / マルチスケールメカニクス / 降伏関数 / 最先端材料 / マルチスケール / CAEシステム / 力学特性 / 塑性論 / 機械材料・材料力学 / シミュレーション工学 / 構造・機能材料 / ナノ材料 / モデル化 / 力学異方性 / 2軸引張り試験 / 結晶塑性論 / マルチスケールモデリング / SUS316L微細粒鋼 / ポリ乳酸 |
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| Outline of Final Research Achievements |
A CAE system was established to reproduce the deformation behavior of advanced materials, such as fiber-reinforced thermoplastics and ultrafine-grained metal materials. Such advanced materials will be rapidly used as structural materials in the future. We numerically predicted the yield function used in CAE for structural analysis based on the experimental multiscale mechanics. The deformation behavior of advanced materials was described based on information on the microstructure obtained from experimental observations. The estimation system for contours of constant plastic work was improved by comparing the analysis results with the experimental results of microstructural observations and biaxial tensile tests. By installing the yield function into general-purpose structural analysis software, it is possible to seamlessly connect a series of processes from material design to development and practical use using CAE.
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| Academic Significance and Societal Importance of the Research Achievements |
微視的な変形の素過程に基づいてFRTPやUFGMといった最先端材料の等塑性仕事面を数値解析的に予測し，材料微細組織に基づく大変形問題を解くマルチスケールメカニクスを構築する点に本研究の学術的特色がある．実験的知見をマルチスケールモデリングの体系に強固に組み込んだ実験マルチスケールメカニクスの構築に取り組み，超微細粒FCC材料の降伏点降下現象や焼鈍処理による硬化といった従来の塑性論では表現することのできない現象を初めて表現することができた．このような微視組織は，成形条件や加工処理によって決定されるため，最終的には組織観察のみに基づく，詳細な力学解析も実験も不要な新材料創製支援ツールが開発できる．
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Report
(4 results)
Research Products
(37 results)
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[Journal Article] Heterogeneous Nano-structure and Its Evolution in Heavily Cold-rolled SUS316LN Stainless Steels2020
Author(s)
Watanabe, C., Kobayashi, B. Aoyagi, Y., Todaka, Y., Kobayashi, M., Sugiura, N., Yoshinaga, N. and Miura, H.
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Journal Title
ISIJ International
Volume: 3
Issue: 3
Pages: 582-589
DOI
NAID
Related Report
Peer Reviewed / Open Access
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[Journal Article] Characterization of Heterogeneous-nano Structure in Austenitic Stainless Steel: Crystal Orientations and Hardness Distribution2020
Author(s)
Koga, N., Suzuki, S., Jiang, H., Watanabe, C., Aoyagi, Y., Kobayashi, M. and Miura, H.
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Journal Title
Journal of Materials Science
Volume: -
Related Report
Peer Reviewed
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[Presentation] Multiscale Simulation Based on Macroscopic Deformation Model Predicted by Microstructure Information of Ultrafine-Grained Metals2019
Author(s)
Aoyagi, Y., Sagara, A., Watanabe, C., Kobayashi, M., Todaka, Y. and Miura, H.
Organizer
The 10th Pacific Rim International Conference on Advanced Materials and Processing
Related Report
Int'l Joint Research / Invited
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