3D meso-scale numerical model and dynamic mechanical behavior of reinforced concrete

被引：0
|
作者：
Deng, Y. J. [1 ,2 ]
Li, L. [2 ]
Lv, T. H. [3 ]
Chen, X. W. [3 ,4 ,5 ]
Ye, Z. J. [2 ]
机构：
[1] Southwest Univ Sci & Technol, Shock & Vibrat Engn Mat & Struct Key Lab Sichuan P, Mianyang, Sichuan, Peoples R China
[2] Southwest Univ Sci & Technol, Dept Civil Engn & Architecture, Mianyang, Sichuan, Peoples R China
[3] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing, Peoples R China
[4] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing, Peoples R China
[5] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China
来源：
STRUCTURAL CONCRETE | 2024年 / 25卷 / 03期
基金：
中国国家自然科学基金;
关键词：
failure process; interface effect; meso-scale model; reinforced concrete; HOPKINSON PRESSURE BAR; PENETRATION; PERFORATION; TARGET; TESTS;
D O I：
10.1002/suco.202300546
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Based on the modeling method of 3D meso-scale finite element model of plain concrete, a 3D meso-scale finite element model of reinforced concrete is established considering the interface transition zone between reinforcement frame and mortar, and the reliability of the established meso-scale finite element model is verified by split Hopkinson pressure bar (SHPB) test results. The failure process of reinforced concrete specimens under typical impact velocity and the influence of interface effect on specimen strength are analyzed by numerical simulation. The research results show that the 3D meso-scale model of reinforced concrete considers the meso-scale structure of reinforced concrete more realistically, and can better reflect the damage change process inside the material in the dynamic loading process. The weak interface effect caused by reinforcement can lead to the slight weakening of the dynamic strength of the material, but at the same time the weak interface effect of the reinforcement is also the main reason why the residual form of reinforced concrete remains well aligned with the shape of the reinforcement frame after the failure.
引用
收藏
页码：1819 / 1839
页数：21
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