计算力学学报2017，Vol.34Issue(5)：591-596,6.DOI:10.7511/jslx201705009
基于网格生成的随机凹凸型混凝土骨料细观建模方法
Mesoscopic modeling method of concrete aggregates with arbitrary shapes based on mesh generation
摘要
Abstract
As two-dimensional numerical analysis is mostly used in concrete mesoscopic numerical analysis structures ,this paper puts forward one two-dimensional modeling approach of concrete aggregates with arbitrary shapes based on a pre-fabricated mesh .This approach effectively solves mesh quality problem of mesoscopic three-phase medium by using pre-fabricated mesh for aggregate mixing . The random concave and convex types of aggregates made a more realistic model ,avoiding inaccurate description of aggregate .The method ensures the randomness of embarking and the rationality of gradation distribution to achieve the aggregate rate reaching 75% .In the end ,this paper adopts concrete damage plasticity (CDP) to stimulate the mesoscopic corrosion cracking of concrete protection layer , analyzes crack initiation and expansion as well as the fracture of concrete .The numerical results are in good agreement with the experimental results .关键词
混凝土/细观/网格生成/二维/混凝土损伤塑性/裂纹Key words
concrete/mesoscopic/mesh generation/two-dimensional/concrete damage plasticity/crack分类
建筑与水利引用本文复制引用
汪奔,王弘,张志强,周蒙蛟..基于网格生成的随机凹凸型混凝土骨料细观建模方法[J].计算力学学报,2017,34(5):591-596,6.基金项目
国家自然科学基金(51478396 （）
51078318 ) （）
四川省青年科技创新团队基金(2013TD0004)资助项目 . （2013TD0004）
