多晶体材料微结构仿真与数值计算

Polycrystalline material microstructure simulation and numerical calculation

根据Laguerre图几何结构和拓扑形貌上的特征,同时引入多晶体材料微观组织结构的各向异性行为,实现了多种不同类型多晶体材料微观组织结构的表征。通过集成自主开发的Laguerre图构造程序和对商业有限元软件ABAQUS二次开发的脚本程序,开发了一套适用于材料微结构数值模拟的基础性平台软件VirtualTPS。最后,利用软件对多晶体材料微结构代表性体积单元的细观力学响应进行了数值计算与分析。

The characterizations of the microstructures of several kinds of polycrystalline material were realized based on the geometry structure and topological feature of Laguerre diagram as well as by introducing the anisotropic behavior of the polycrystalline material. Integrating the independently developed program for Laguerre diagram construction and the secondarily developed script program of commercial finite element analysis software ABAQUS, a basic platform software Virtual TPS was developed for numerical simulation of material microstructure. Using the software the numerical calculation and analysis were performed for micromechanical responses of representative volume elements in the polycrystalline material microstructure.