Mesoscopic study of concrete with random aggregate model using phase field method
文献类型：期刊论文
| 作者 | Xia, Yang1,3; Wu, Wenan2; Yang, Yongtao1,3; Fu, Xiaodong1,3 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2021-12-06 |
| 卷号 | 310页码:20 |
| ISSN号 | 0950-0618 |
| 关键词 | Concrete Mesoscopic study Random aggregate model Failure mechanism Phase field method |
| DOI | 10.1016/j.conbuildmat.2021.125199 |
| 英文摘要 | In the present work, the phase field method implemented by the user-defined element (UEL) subroutine of commercial finite element software ABAQUS is adopted to investigate the failure pattern and mechanical re-sponses of meso-scale concrete specimens. To build the structure model of meso-scale concrete specimens, the recently proposed random sequential addition (RSA) method is used. With the proposed numerical model, the uniaxial tensile test was carried out as a benchmark test to investigate the influence of several parameters, such as the volume fraction, size, and major axis direction of aggregates on the mechanical responses and failure mode of concrete specimens. Then, two classic examples, namely, a three-point bending (TPB) test and a four-point bending (FPB) test, are investigated with the proposed numerical model. The numerical results from the pro-posed numerical model indicate that: A higher interfacial transition zone (ITZ) content has an adverse effect on the peak strength of concrete; A negative correlation is shown between major axis direction of aggregates and peak strength of concrete; Intergranular fracture mode is observed, in which the damage areas of concrete are mainly distributed around the ITZ; The linear elastic stiffness and peak strength are almost independent of the aggregate distribution, but the fracture propagation patterns are sensitive to meso-structures of concrete; and numerical results of TPB and FPB tests also indicate that the notch of concrete has non-negligible influences on fracture propagation path, as well as linear elastic stiffness and peak load of concrete specimens. |
| 资助项目 | Youth Innovation Promotion Association CAS[2020327] ; National Natural Science Foundation of China[12072357] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000708297800001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/28504]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Yongtao |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Yang,Wu, Wenan,Yang, Yongtao,et al. Mesoscopic study of concrete with random aggregate model using phase field method[J]. CONSTRUCTION AND BUILDING MATERIALS,2021,310:20. |
| APA | Xia, Yang,Wu, Wenan,Yang, Yongtao,&Fu, Xiaodong.(2021).Mesoscopic study of concrete with random aggregate model using phase field method.CONSTRUCTION AND BUILDING MATERIALS,310,20. |
| MLA | Xia, Yang,et al."Mesoscopic study of concrete with random aggregate model using phase field method".CONSTRUCTION AND BUILDING MATERIALS 310(2021):20. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。