【摘要】 该文提出了一种面向对象的三维晶粒形貌建模与仿真算法。首先根据微观组织模拟的连续形核模型和晶粒的细胞生长法 ,对多晶体凝固过程中晶粒组织进行了三维建模 ,同时利用面向对象的方法 ,构造多晶体的数据模型和数据结构 ,然后采用CSG/B -rep混合表示方法建立多晶体仿真模型。该算法在PC机上实验表明 ,所建模型较好地仿真了三维多晶体组织 ,因此该算法为多晶体晶粒三维形貌的研究提供了一种行之有效的方法。更多还原

【Abstract】 This paper proposes an object-oriented algorithm for 3D modeling and simulation of grain shape. First, 3D modeling of microstructures of polycrystalline grains in the process of solidification is implemented based on the model of continuous nucleation and the method of cellular growth of the grain. Meanwhile, polycrystalline data model and structure are established by means of object-oriented method. Then, polycrystalline simulation model is built using the CSG/B-rep mixed representing approach. The experimental results on personal computer demonstrate that the created models can effectively simulate polycrystalline microstructures. Therefore, this algorithm provides a practical method for studying shapes of polycrystalline grains.更多还原