2012 Fiscal Year Final Research Report
CORRELATION ANLYSIS OF RANDOMNESS, DEFORMATION AND DAMAGE BY WAY OF MICROSCOPIC INHOMOGENEITY FORCES IN POLYCRYSTALLINE AGGREGATE MODEL
| Project/Area Number |
22560080
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Kyoto University |
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Principal Investigator |
IMATANI Shoji 京都大学, 大学院・エネルギー科学研究科, 准教授 (70191898)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 連続体力学 / 有限要素法 / 多結晶金属材料 / 界面 / 不均質力 / 損傷 |
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| Research Abstract |
Based on the configurational mechanics concept, microscopic inhomogeneity is discussed on polycrystalline material models. A numerical algorithm for evaluating the inhomogeneity force, which is none other than a generalization of the energy release rate in fracture mechanics, is constructed and applied to the interfacial problems in polycrystalline aggregates. The simulation suggests that the inhomogeneity force per unit area, which results from the loading condition and crystal morphology as well, is independent on the path of area integration so far as the path does not involve any singularity portion.
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