中文摘要：

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．

英文摘要：

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.