| 不规则颗粒随机分布区域的数值仿真算法 |
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| 引用本文： | 宋来忠,彭刚,姜袁.不规则颗粒随机分布区域的数值仿真算法[J].系统仿真学报,2010,22(1). |
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| 作者姓名： | 宋来忠 彭刚 姜袁 |
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| 作者单位： | 1. 三峡大学理学院,宜昌,443002
2. 三峡大学水电土木学院,宜昌,443002 |
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| 基金项目： | 国家自然科学基金(50679039) |
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| 摘 要： | 基于参数曲线的自由变形技术,对含有大量不规则形状的增强颗粒/孔洞并呈随机分布的多相复合材料,在细观层次上给出了二维情形下模拟区域中由椭圆(或圆)几何变形得到不规则颗粒/孔洞的快速生成算法和优化算法,使得每一增强颗粒/孔洞的轮廓线都有确定的形式统一的参数方程。以骨料为卵石或碎石的混凝土为例,给出了二维级配、投放比、总含量等可控制的随机混凝土数值试样。为进一步在细观层次上研究和确定混凝土的动力学性能提供了理论依据。
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| 关 键 词： | 随机模拟 细观层次 复合材料 不规则颗粒/孔洞 |
Numerical Simulation Algorithm for Domain with Irregular Grains Disturbed Randomly |
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| SONG Lai-zhong,PENG Gang,JIANG Yuan.Numerical Simulation Algorithm for Domain with Irregular Grains Disturbed Randomly[J].Journal of System Simulation,2010,22(1). |
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| Authors: | SONG Lai-zhong PENG Gang JIANG Yuan |
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| Institution: | SONG Lai-zhong1,PENG Gang2,JIANG Yuan2(1.College of Science,China Three Gorges University,Yichang 443002,China,2.College of Civil , Hydroelectric Enginering,China) |
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| Abstract: | The numerical simulation algorithm is presented for the composite material with large numbers of random irregular grains/cavities by the technique of free-form deformation for parametric curves.Based on the ellipses(or circles) covering the irregular grains/cavities of any shape,a random method and an optimization method were given to simulate the domain with random irregular grains/cavities by the deformed ellipses(or circles),such that the outline of every grain/cavity exists exactly parametric equation.A... |
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| Keywords: | random simulation mesoscopic level composite material irregular grains/cavities |
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