Analytical prediction and homogenization analysis of grain fining effects using a strain gradient plasticity theory
使用应变梯度塑性理论对晶粒细化效果进行分析预测和均匀化分析
基本信息
- 批准号:19360048
- 负责人:
- 金额:$ 10.65万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2007
- 资助国家:日本
- 起止时间:2007 至 2009
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The increase of yield stress due to grain fining is experimentally well-known as the Hall-Petch relation. It has been, however, reported that the grain size dependence of yield stress in the submicron to several-micron range of grain sizes is stronger than that in the Hall-Petch relation. In this study, by implementing the self-energy of dislocations in a strain gradient plasticity theory, the grain size dependence of yield stress is analytically estimated, and the resulting prediction is examined using experimental data. Then, an implicit method of homogenization analysis is developed by taking account of the self energy of dislocations.
由于晶粒细化而导致的屈服应力的增加在实验上被称为 Hall-Petch 关系。然而,据报道,在亚微米至几微米晶粒尺寸范围内,屈服应力对晶粒尺寸的依赖性强于 Hall-Petch 关系。在本研究中,通过在应变梯度塑性理论中应用位错的自能,分析估计了屈服应力的晶粒尺寸依赖性,并使用实验数据检验了所得的预测。然后,通过考虑位错的自能,开发了一种隐式均质化分析方法。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Grain size dependence of yield stress due to strain energy of geometrically necessary dislocations
由于几何必要位错的应变能而导致的屈服应力与晶粒尺寸的相关性
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:大野信忠;奥村大;N. Ohno
- 通讯作者:N. Ohno
Implicit iterative finite element scheme for strain gradient crystal plasticity model based on self-energy of GNDs
基于GND自能的应变梯度晶体塑性模型隐式迭代有限元方案
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:R. Kametani;K. Kodera;D. Okumura;N. Ohno
- 通讯作者:N. Ohno
Strain gradient effects due to self-energy of geometrically necessary dislocations
由于几何必要位错的自能而产生的应变梯度效应
- DOI:
- 发表时间:2008
- 期刊:
- 影响因子:0
- 作者:柴田智行;奥村大;大野信忠;楊暁冬;N. Ohno;N. Ohno
- 通讯作者:N. Ohno
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OHNO Nobutada其他文献
OHNO Nobutada的其他文献
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{{ truncateString('OHNO Nobutada', 18)}}的其他基金
Homogenized inelastic constitutive equation of open-porous bodies: theoretical developments and applications
开孔体均匀非弹性本构方程:理论发展与应用
- 批准号:
24360045 - 财政年份:2012
- 资助金额:
$ 10.65万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Large-scale Multiscale Analysis for Microscopic Buckling and Macroscopic Instability of Periodic Cellular Solids Based on a Homogenization Theory
基于均质化理论的周期性多孔固体微观屈曲和宏观不稳定性的大规模多尺度分析
- 批准号:
15360051 - 财政年份:2003
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$ 10.65万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Microscopic Buckling Analysis of Cellular Solids Based on a Homogenization Theory of Finite Deformation
基于有限变形均匀化理论的多孔固体微观屈曲分析
- 批准号:
13650084 - 财政年份:2001
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Laser-Raman Measurement and Analytical Evaluation of Matrix Creep Induced Stress Relaxation in Broken Fibers
断裂纤维中基体蠕变引起的应力松弛的激光拉曼测量和分析评估
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11650086 - 财政年份:1999
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Homogenization Analysis and Experimental Verification for Creep of Unidirectional Fiber Reinforced Composites
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09450046 - 财政年份:1997
- 资助金额:
$ 10.65万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
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