三维多晶体材料微结构的力学响应计算

Mechanical response computation of three-dimensional polycrystalline material microstructures

材料微结构细观力学响应的数值计算对于识别"材料结构弱点",评估微裂纹的启裂、扩展,预测微结构材料损伤后的材料性能,推演"微结构虚拟失效"行为具有重要的意义.利用自主开发的材料微观组织结构仿真软件ProDesign构造出三维多晶体材料微结构的代表性体积单元,通过C语言程序设计、Python脚本语言混合编程的方式,实现对商业有限元软件ABAQUS前处理的二次开发,从而有效地实现三维多晶体材料微结构的细观应力响应计算.

The numerical computation of micro-mechanical response of material microstructure is of great significance for identifying “material structure weakness”, evaluating initialization and propagation of micro-cracks, predicting material performance after material microstructural damaging, and deducing the behavior of “virtual failure of microstructure”. Using an independently developed software ProDesign for simulation of material microstructure, the “representative volume element” of three-dimensional polycrys- talline material microstructures was constructed. By using a mixing programme of C-programming with Python scripting language, secondary development of commercial.finite element software ABAQUS preprocessing was implemented, so that the computation of microscopic stress response of three-dimensional polycrystalline material microstructure was effectively realized.