| Project/Area Number |
22760074
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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 名古屋大学, 工学研究科, 講師 (70362283)
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| Project Period (FY) |
2010 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 塑性 / 転位 / 材料強度 / 離散転位塑性法 / 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 / 塑性論 / 均質化理論 / 寸法効果 / 複合材料 / 数値シミュレーション |
|---|
| Research Abstract |
In this study, plastic size effects of lamellar composites were analyzed using a discrete dislocation plasticity approach. The present approach was verified by analyzing a model lamellar composite including edge dislocations fixed at interfaces. In analyses, the thickness and the stiffness of elastic layers as well as the slip plane gap between elastic-plastic layers were considered as parameters. It was thus found, in the case where elastic layer's thickness is several dozen nm, that strain hardening in elastic-plastic layers depends considerably on the slip plane gap between elastic-plastic layers, and that this effect is attributed to the long range stress due to dislocation pile-ups in adjacent elastic-plastic layers.
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