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| Mesoscopic modeling method of concrete aggregates with arbitrary shapes based on mesh generation |
| Received:August 16, 2016 Revised:December 01, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201705009 |
| KeyWord:concrete mesoscopic mesh generation two-dimensional concrete damage plasticity crack |
| Author | Institution |
| 汪奔 |
西南交通大学 力学与工程学院 应用力学与结构安全四川省重点实验室, 成都 |
| 王弘 |
西南交通大学 力学与工程学院 应用力学与结构安全四川省重点实验室, 成都 |
| 张志强 |
西南交通大学 土木工程学院 地下工程系, 成都 |
| 周蒙蛟 |
西南交通大学 力学与工程学院 应用力学与结构安全四川省重点实验室, 成都 |
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| Abstract: |
| As two-dimensional numerical analysis is mostly used in concrete mesoscopic numerical analysis structures,this paper puts forward one two-dimensional modeling approach of concrete aggregates with arbitrary shapes based on a pre-fabricated mesh.This approach effectively solves mesh quality problem of mesoscopic three-phase medium by using pre-fabricated mesh for aggregate mixing.The random concave and convex types of aggregates made a more realistic model,avoiding inaccurate description of aggregate.The method ensures the randomness of embarking and the rationality of gradation distribution to achieve the aggregate rate reaching 75%.In the end,this paper adopts concrete damage plasticity (CDP) to stimulate the mesoscopic corrosion cracking of concrete protection layer,analyzes crack initiation and expansion as well as the fracture of concrete.The numerical results are in good agreement with the experimental results. |