| 基于Voronoi图的晶体塑性有限元多晶几何建模 |
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| 引用本文： | 司良英,;邓关宇,;吕程,;刘相华. 基于Voronoi图的晶体塑性有限元多晶几何建模[J]. 沈阳黄金学院学报, 2009, 0(3): 193-197 |
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| 作者姓名： | 司良英, 邓关宇, 吕程, 刘相华 |
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| 作者单位： | [1]东北大学轧制及连轧自动化国家重点实验室,沈阳110004; [2]澳大利亚伍伦贡大学机械材料与机电学院,伍伦贡2522,澳大利亚 |
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| 摘 要： | 通常用规则的六边形或四边形等来表示晶粒，不能够反映出晶界的不规则性，本文使用Voronoi方法在大型有限元软件ABAQUS中建立了多晶材料的几何模型，能够表达出晶粒的几何形状与晶界的不规则性；在此基础上提出了一种控制晶粒大小分布及织构的方法，通过调整参数能够建立具有不同晶粒尺寸分布及织构的模型．
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| 关 键 词： | 多晶建模 晶体塑性 有限元 Voronoi diagram |
Polycrystal geometry modeling of crystal plasticity finite element method with voronoi diagram |
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| Affiliation: | SI Llang-ying , DENG Guan-yu, LV Cheng, LIU Xiang-hua (1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China; 2. School of Mechanical Materials and Mechatronic Engineering, Umversity ofWollongong, Northfields Avenue, WoUongong NSW 2522, Australia ) |
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| Abstract: | Generally regular hexagon or quadrangle elements were used to represent grains, and these methods can＇ t express the irregularity of grain boundaries. The Voronoi diagram is a fundamental data structure about space partitioning. In this paper, the polycrystal model was created in ABAQUS with Voronoi diagram method, which can express the shape of the grains and the irregular grain boundaries. A method to describe the grain size and texture distribution was introduced by adjusting the modeling parameters. |
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| Keywords: | polycrystal modeling crystal plasticity FEM Voronoi diagram |
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