摘要
分别建立不同纤维掺量的钢纤维、玻璃纤维和聚丙烯纤维增强水泥的数值分析模型,实现了各模型试件的破坏过程模拟,从细观力学角度研究其微裂纹萌生、扩展、相互作用和贯通的机理,并从破裂失稳的前兆模式和声发射的时空分布规律进行解释和探讨,以期实现对这几类纤维增强水泥的强韧化设计的理论指导.
A meso-level numerical model of fiber reinforced cement （FRC） with varied incorporation rate and varied fiber type has been made to study the performance of steel, glass and polypropylene FRC. The complete failure process, including the phenomenon of crack initiation, coalescence and development, the crack interac- tion and final penetration have all been analyzed. Furthermore, some basic issues during failure process inclu- ding spatio-temporal distribution of acoustic emission and precursor pattern of the failure have also been investigated. Based on above-mentioned studies, the theoretical guide on how to carry out the toughening design on steel, glass and polypropylene FRC could be anticipated.
出处
《广州大学学报（自然科学版）》
CAS
2010年第4期67-70,共4页
Journal of Guangzhou University:Natural Science Edition
基金
国家自然科学基金项目(50778046)
广东省科技计划项目(2009A030302016)资助
关键词
钢纤维
玻璃纤维
聚丙烯纤维
破坏过程
掺量
steel fiber
glass fiber
polypropylene fiber
failure process
incorporation rate
作者简介
作者简介：张亚芳（1966-），女，教授，博士．E-mail：zhangyafang2004@163．com
