2009 Fiscal Year Final Research Report
Development of a life assessment system of fatigue crack initiation and propagation under macroscopically elastic condition
| Project/Area Number |
20760562
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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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 | Kyushu University |
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Principal Investigator |
TSUTSUMI Seiichiro Kyushu University, 大学院・工学研究院, 助教 (70344702)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 塑性 / 疲労 / 破壊 / 弾塑性 / 変形解析 |
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| Research Abstract |
The plastic deformation was measured during various cyclic loading conditions under macroscopically elastic stress state. The elasto-plastic constitutive model was proposed to reproduce the measured stress-strain relationships. The prototype model for the fatigue crack initiation criteria was proposed based on the accumulated plastic work predicted by the proposed cyclic plasticity model.
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