金属材料计算微观力学网格自动生成

Automatic meshing of the computational micro mechanics in metal material

金属材料微观结构形态不仅在材料科学中具有重要研究意义，而且也是微、细观力学分析，特别是计算微观力学的研究内容。本文依据冶金物理学理论基础，简化材料微结构形成过程，把数学和几何学结合起来，提出了“随机投放，逐点扫描”构造材料微结构形态的方法，并将此方法的仿真结果进行统计分析，用材料物理概念予以检验，表明仿真结果不丢失晶粒形状、晶粒度等主要统计特征，与真实材料的微结构有良好的一致性。

Microstructure of material plays an important role in material science research, especially in micro mechanical calculations. Combining theories of metallurgical physics with the mathematics and geometry, this paper has simplified the forming process of material’s microstructure, simplified automatic meshing process for microstructure is derived. The user initially selects a random point, and then the program sequencially meshes starting with this point, that is “putting randomly, scanning one by one” A statistical analysis was conducted on automatic meshing results, which demonstrated that the main statistical characteristies, such as crystal shape, crystal denisty, etc., were preserved. The automatic mesh generated agrees well with actual microstructure.