摘要
为解决多晶体材料结构的可视化,设计Voronoi增量式外存算法,开发了多晶体材料微结构的"海量"级仿真技术,获得了数值化的晶粒几何信息数据。利用OpenGL图形接口,实现了一般多晶体及表层晶粒细化多晶体材料微结构的可视化仿真,并在此基础上采用Bunge符号的级数展开法模型,计算了各个晶粒的取向分布函数(ODF),实现了取向分布函数值在取向空间内与实际晶体取向分布的一一对应;开发了软件ProDesign,为三维多晶体材料微结构的力学响应计算提供了基础性仿真工具,为识别"材料结构弱点"、评估微裂纹(群)的启裂及扩展、推演"微结构虚拟失效"行为搭建了支撑性平台。
Targeted at the better visualization of polycrystalline material, this paper introduces the design of the incremental out-of-core algorithm for Voronoi diagram and the development mass grade simulation technology for polycrystalline material for numerical geometric data of grain. Visualize simulation of microstructure for polycrystal and the microstructure of the surface layer of polycrystal is realized by OpenGL. The paper describes the use of Bunge＇ s series expansion method to calculate each grain＇ s orientation distribution function （0DF）, and accomplish one-to-one correspondence between orientation distribution function value and crystal orientation distribution. The paper highlights the development of the software, the ProDesign which serves as basic simulation tool with which to calculate mechanical response for three-dimensional microstructures of polycrystalline material and serves to build up supportive platforms for identifying ＂material structure weakness＂, evaluating initiation and expansion of micro-cracks, and deducing the behavior of ＂virtual failure of microstructure＂.
出处
《黑龙江科技学院学报》
CAS
2009年第5期401-406,共6页
Journal of Heilongjiang Institute of Science and Technology
基金
国家自然科学基金资助项目(50571042)
关键词
多晶体材料
微结构
取向分布函数
可视化仿真
Voronoi增量算法
polycrystalline material
microstructure
orientation distribution function
visualized simulation
incremental out-of-core algorithm for Voronoi
