华中科技大学学报（自然科学版）2024，Vol.52Issue(10)：13-19,7.DOI:10.13245/j.hust.240280
混凝土细观损伤演化与宏观均匀化表征
Evolution of concrete mesoscopic damage and its macroscopic homogenization quantification
摘要
Abstract
To realize quantitative characterization of concrete damage at the macroscale based on its mesoscopic counterpart in concrete macro-meso-scale hierarchical finite element(FE)analysis,concrete mesoscopic FE specimens with varying random mesostructures were generated for simulating the meso-damage evolution in concrete,and the evolution characteristics of meso-damage during different loading stages were captured based on the simulation results.By partitioning the meso-sample domain based on the meso-damge state,a partition-based homogenization scheme was proposed for quantifying concrete post-peak macro-damage.Then,a mixed homogenization scheme applicable to the quantification of macroscopic damage in loading stages was proposed by combining the standard homogenization scheme.The proposed mixed homogenization scheme was numerically implemented within the framework of concrete macro-meso-scale hierarchical FE analysis.Numerical examples show the damage evolution in concrete can be tracked and quantified at both the macroscale and mesoscale by using the proposed mixed homogenization scheme.关键词
混凝土损伤/宏观表征/分区均匀化/混合均匀化/多尺度Key words
concrete damage/macroscopic quantification/partition-based homogenization scheme/mixed homogenization scheme/multiscale分类
建筑与水利引用本文复制引用
徐磊,吴雨凌,甘磊,姜磊..混凝土细观损伤演化与宏观均匀化表征[J].华中科技大学学报（自然科学版）,2024,52(10):13-19,7.基金项目
国家自然科学基金资助项目(51979092) （51979092）
江苏省水利科技项目(2022019). （2022019）
