2013 Fiscal Year Final Research Report
Prediction of fatigue crack initiation and propagation based on micro-plasticity
| Project/Area Number |
22686082
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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 |
Naval and maritime engineering
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| Research Institution | Osaka University (2011-2013)
Kyushu University (2010) |
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Principal Investigator |
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 疲労 / 塑性 / き裂 / 数値解析 |
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| Research Abstract |
Predicting the mechanical fatigue phenomena of materials subjected to cyclic stresses, the mechanisms on generation and accumulation of inelastic deformation has to be clarified. In this study, numerical study based on both macro- and crystal-plasticity FE modeling are conducted to evaluate the mechanical responses under cyclic loading condition. Then, the effects of inclusions on the fatigue behavior at the stress level lower than the yield stress, i.e macroscopically elastic condition, was simulated and compared with the experimental result of a carbon steel.
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