Application of Base Force Element Method to Mesomechanics Analysis for Concrete

Application of Base Force Element Method to Mesomechanics Analysis for Concrete
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基础力元法在混凝土细观力学分析中的应用

DOI:
10.1155/2014/528590
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发表时间:
2014-08
影响因子:
--
通讯作者:
Junhua Ni
Junhua Ni
中科院分区:
工程技术4区
文献类型:
--
作者:
Yijiang Peng;Yao Wang;Qing Guo;Junhua Ni

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采用损伤力学的基本力元法,从细观层次分析了混凝土的抗压强度、抗压强度的尺寸效应和断裂过程。将混凝土视为由粗集料、硬化水泥砂浆和细观界面过渡区组成的三相复合材料。采用随机骨料模型模拟混凝土细观结构。采用损伤力学边界有限元法模拟了混凝土在单轴压缩荷载作用下的力学性能和断裂过程。仿真结果与试验结果吻合较好。该分析方法为混凝土断裂机理研究和力学性能数值模拟提供了新的途径。
The base force element method (BFEM) on damage mechanics is used to analyze the compressive strength, the size effects of compressive strength, and fracture process of concrete at mesolevel. The concrete is taken as three-phase composites consisting of coarse aggregate, hardened cement mortar, and interfacial transition zone (ITZ) on mesolevel. The random aggregate model is used to simulate the mesostructure of concrete. The mechanical properties and fracture process of concrete under uniaxial compression loading are simulated using the BFEM on damage mechanics. The simulation results agree with the test results. This analysis method is the new way for investigating fracture mechanism and numerical simulation of mechanical properties for concrete.
基础力元法在再生骨料混凝土细观力学分析中的应用
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发表时间: 2013-01-01
影响因子: --
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