Development of nonlocal crystal plasticity theory accounting for discrete dislocation properties and its verification due to multiscale analysis
| Project/Area Number |
20760069
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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 |
Materials/Mechanics of materials
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| Research Institution | Nagoya University |
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Principal Investigator |
OKUMURA Dai Nagoya University, 大学院・工学研究科, 講師 (70362283)
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| Project Period (FY) |
2008 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 塑性 / 転位 / 材料強度 / 離散転位動力学法 / ひずみこう配理論 / 転位論 / マルチスケール解析 / 有限要素解析 |
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| Research Abstract |
In this study, a strain gradient theory of crystal plasticity that accounts for the self-energy of geometrically necessary dislocations was developed. Then, an implicit iterative finite element scheme for the theory was also developed. It was demonstrated that this scheme is superior to the conventional method from the point of the incremental stability as well as of the computational efficiency. Furthermore, to verify the theory, the formulation of a homogenization theory for discrete dislocation dynamics analysis was successfully performed.
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Report
(3 results)
Research Products
(16 results)
