| 泡沫铝弹性接触静力学行为的多尺度模拟 |
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| 引用本文： | 张元章,尹益辉. 泡沫铝弹性接触静力学行为的多尺度模拟[J]. 计算力学学报, 2008, 25(Z1) |
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| 作者姓名： | 张元章 尹益辉 |
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| 作者单位： | 中国工程物理研究院总体工程研究所; |
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| 摘 要： | 对泡沫铝的宏、细观组织结构,基于MC方法建立与材料制备工艺相应的数值模型,作为多尺度模拟的前提.通过计算模拟和统计分析大量数值试样的力学性能,得到了不同制备工艺制得的泡沫铝的弹性模量的分散性特点.借鉴代表性体积单元方法(RVE)和完全多格方法(FMG)的思想,采用基于"巨原子"模型的多尺度关联方法,并以简化的物理势场描述巨原子问的关系,设计了原子-巨原子-有限元多尺度算法.通过算例探讨了与理想刚性平面接触时,泡沫铝接触表面的应力集中情况.
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| 关 键 词： | 泡沫铝 多尺度模拟方法 宏细观组织结构 蒙卡方法 |
On multiscale simulation for static elastical surface contact behavior of foamed aluminum |
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| ZHANG Yuan-zhang,YIN Yi-hui. On multiscale simulation for static elastical surface contact behavior of foamed aluminum[J]. Chinese Journal of Computational Mechanics, 2008, 25(Z1) |
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| Authors: | ZHANG Yuan-zhang YIN Yi-hui |
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| Affiliation: | Institute of Structural Mechanics;CAEP;Mianyang 621900;China |
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| Abstract: | The microstructure of a foamed material was numerically modeled corresponding to its different preparation processes based on MC method.Multi-scale simulation calculations should be based on these accurate numerical models of material histology.Based on the thoughts of RVE and FMG methods,huge-atom multiscale connecting method was used with predigested physics potential describing the interactions among huge-atoms to develop a multi-scale simulation method of atom-huge-atom-FE.An example of multi-scale nume... |
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| Keywords: | Foamed aluminum Multi-scale simulation method Microstructure Monte-Carlo method |
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