A LATTICE-PARTICLE APPROACH FOR THE SIMULATION OF FRACTURE PROCESSES IN FIBER-REINFORCED HIGH-PERFORMANCE CONCRETE
A LATTICE-PARTICLE APPROACH FOR THE SIMULATION OF FRACTURE PROCESSES IN FIBER-REINFORCED HIGH-PERFORMANCE CONCRETE
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发表时间：
2012
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通讯作者：
G. Ruiz;C. Andrade;R. Yu;X. X. Zhang-X.
中科院分区：
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作者：
G. Ruiz;C. Andrade;R. Yu;X. X. Zhang-X.
纤维增强高性能混凝土（FRHPC）的使用范围越来越广泛；因此有必要开发工具来模拟和更好地理解其行为。在这项工作中，提出了一个用于 FRHPC 断裂力学分析的离散模型。由砂浆和粗骨料组成的素混凝土基体通过三维随机颗粒模型进行建模。纤维夹杂物被建模为通过特殊界面元素连接到基体的桁架元素。执行光纤拉拔测试来表征界面行为，并实施不同光纤配置的直接张力测试。
The use of fiber-reinforced high-performance concrete (FRHPC) is becoming more extended; therefore it is necessary to develop tools to simulate and better understand its behavior. In this work, a discrete model for the analysis of fracture mechanics in FRHPC is presented. The plain concrete matrix, made of mortar and coarse aggregates, is modeled by means of a three-dimensional random particle model. The fiber inclusions are modeled as truss elements linked to the matrix via special interface elements. Fiber pull-out tests are performed to characterize the interface behavior and implemented into direct tension tests with different fiber configurations.