二维多晶体材料微结构的力学响应计算  

Mechanical response computation of two-dimensional polycrystalline material microstructure

作　　者：任淮辉[1] 李旭东[1] 李俊琛[1] 龙弟德[1] 

机构地区：[1]兰州理工大学有色金属新材料省部共建国家重点实验室,甘肃兰州730050

出　　处：《武汉科技大学学报》2008年第4期427-431,共5页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金资助项目(50271016)

摘　　要：为了研究二维多晶体材料微结构细观尺度的力学性能和失效行为,将材料微结构细观力学响应的数值计算建立在材料微观组织结构的代表性体积单元(RVE)上。利用已开发的材料微观组织结构仿真软件Pro-Design构造出二维多晶体材料微结构模型,采用C程序设计和Python脚本语言混合编程的方法,开发出用于材料微结构有限元网格划分与细观应力响应计算的软件AutoRVE,这对评估微裂纹的启裂、扩展,预测复合材料微结构材料损伤后的材料性能,推演微结构"虚拟失效"行为具有指导意义。To study the mechanical properties and failure behavior of two-dimensional polycrystalline material microstructure at the micro level, the numerical response of micromechanics of microstructure is established on the representative volume element （RVE）. Using the independently developed material microstructure software ProDesign, the model of two-dimensional polycrystalline material microstructures is constructed. By way of C programming and Python scripting language mixing programming, the software AutoRVE used to mesh the microstructure and compute the meso-stress numerical response is developed, which is of great significance for evaluating initialization and propagation of microcracks of heterogeneous materials, predicting material performance after microstructural damaging, and deducing the behavior of ＂virtual failure＂ of microstructure.

关 键 词：材料微观组织结构 代表性体积单元 Python脚本语言 ABAQUS 

分 类 号：TG111.91[金属学及工艺—物理冶金] TP391.77[金属学及工艺—金属学]