| 考虑粒子分布特征的复合材料细观力学方法 |
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| 引用本文： | 李伟,宋卫东,宁建国.考虑粒子分布特征的复合材料细观力学方法[J].固体力学学报,2010,31(4):339-345. |
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| 作者姓名： | 李伟 宋卫东 宁建国 |
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| 作者单位： | 北京理工大学 |
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| 基金项目： | 国家自然科学基金项目，爆炸科学与技术国家重点实验室(北京理工大学)自主研究课题，国家重点基础研究发展计划 |
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| 摘 要： | 研究了颗粒增强复合材料中颗粒增强体粒径分布对复合材料力学性能的影响,利用分形思想将增强粒子的概率分布特征考虑进来,对已有的复合材料细观力学等效夹杂方法进行修正,建立了一个考虑粒子统计分布的细观等效力方法.以混凝土为例,分析了颗粒增强体体积含量、夹杂与基体的模量比和分形结构的分辨率对复合材料力学性能的影响.结果表明,这种新方法能够适用于分析颗粒增强复合材料的细观结构对力学性能的影响.
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| 关 键 词： | 颗粒增强复合材料 混凝土 粒径分布 分形 等效夹杂 |
| 收稿时间： | 2009-04-23 |
A COMPOSITE MICROMECHANICS METHOD CONSIDERING THE GRAIN SIZE PROBABILITY DISTRIBUTION |
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| Wei Li,Weidong Song,Jianguo Ning.A COMPOSITE MICROMECHANICS METHOD CONSIDERING THE GRAIN SIZE PROBABILITY DISTRIBUTION[J].Acta Mechnica Solida Sinica,2010,31(4):339-345. |
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| Authors: | Wei Li Weidong Song Jianguo Ning |
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| Abstract: | The influence of the reinforced particle size on the mechanics property of the particle reinforced composites was studied. Using fractal theory, the grain size probability distribution was taken into account to amend the departed equivalent inclusion method of the composite micromechanics. A new equivalent force method reflecting the grain size probability distribution was established. Taking concrete as an example, the effects of the volume fraction of composite, the modulus ratio of the inclusion and the matrix, and the resolution of the fractals structure to the mechanics were analyzed. The results show that this new method can be used to study the influence of microstructure on the particle reinforced composite mechanics performance. |
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