Fracture properties of epoxy asphalt mixture based on extended finite element method

被引：0
|
作者：
钱振东 [1 ]
胡靖 [1 ]
机构：
[1] Intelligent Transportation System Research Center,Southeast University
来源：
Journal of Central South University | 2012年 / 19卷 / 11期
基金：
中国国家自然科学基金;
关键词：
epoxy asphalt mixture; microstructure; extended finite element method; fracture morphology; mechanical response;
D O I：
暂无
中图分类号：
U414 [道路建筑材料];
学科分类号：
0805 ;
摘要：
Crack is found to be a major distress that affects the performance of the epoxy asphalt pavement.An extended finite element method was proposed for investigating the fracture properties of the epoxy asphalt mixture.Firstly,the single-edge notched beam test was used to analyze the temperature effect and calculate the material parameters.Then,the mechanical responses were studied using numerical analysis.It is concluded that 5℃ can be selected as the critical temperature that affects the fracture properties,and numerical simulations indicate that crack propagation is found to significantly affect the stress state of the epoxy asphalt mixture.The maximum principal stress at the crack surface exhibits different trends at various temperatures.Numerical solution of stress intensity factor can well meet the theoretical solution,especially when the temperature is lower than 5℃.
引用
收藏
页码：3335 / 3341
页数：7
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