Mesoscopic Simulation of Failure of Mortar and Concrete by 2D RBSM
Mesoscopic Simulation of Failure of Mortar and Concrete by 2D RBSM
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DOI：
10.3151/jact.2.359
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发表时间：
2004-10
影响因子：
2
通讯作者：
K. Nagai;Yasuhiko Sato;T. Ueda
中科院分区：
文献类型：
--
作者：
K. Nagai;Yasuhiko Sato;T. Ueda
混凝土是一种由砂浆和细观骨料组成的异质材料。在这个级别上评估断裂过程有助于阐明混凝土的材料特性。然而，这一级别的分析方法尚未得到充分研究。在本研究中，使用刚体弹簧模型 (RBSM) 对砂浆和混凝土进行二维分析。为了模拟混凝土，开发了细观尺度的本构模型。分析很好地模拟了单轴和双轴应力条件下砂浆和混凝土的破坏行为以及抗压和抗拉强度关系。还对混凝土的局部压缩破坏进行了定性模拟。
Concrete is a heterogeneous material consisting of mortar and aggregate at the meso level. Evaluation of the fracture process at this level is useful to clarify the material characteristic of concrete. However, the analytical approach at this level has not yet been sufficiently investigated. In this study, two-dimensional analyses of mortar and concrete are carried out using the Rigid Body Spring Model (RBSM). For the simulation of concrete, constitutive model at the meso scale are developed. Analysis simulates well the failure behavior and the compressive and tensile strength relationship of mortar and concrete under uniaxial and biaxial stress conditions. Localized compressive failure of concrete is also simulated qualitatively.