Comparison between experimental and numerical results of mixed-mode crack propagation in concrete: Influence of boundary conditions choice

被引：19

作者：

Carpiuc-Prisacari, A. ^{[1
,2
,3
]}

Poncelet, M. ^{[1
]}

Kazymyrenko, K. ^{[2
,3
]}

Hild, F. ^{[1
]}

Leclerc, H. ^{[1
]}

机构：

[1] Univ Paris Saclay, CNRS, ENS Cachan, LMT, 61 Ave President Wilson, F-94235 Cachan, France

[2] Univ Paris Saclay, Inst Sci Mecan & Applicat Ind, UMR EDF CNRS CEA ENSTA 9219, 828 Blvd Marechaux, F-91762 Palaiseau, France

[3] EDF Lab Paris Saclay, 7 Blvd Gaspard Mange, F-91120 Palaiseau, France

来源：

CEMENT AND CONCRETE RESEARCH | 2017年 / 100卷

关键词：

Concrete; Damage; Digital image correlation; Mixed-mode fracture; Multiaxial; FRACTURE; IDENTIFICATION; BEHAVIOR;

D O I：

10.1016/j.cemconres.2017.05.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In order to experimentally validate concrete damage models and better characterize the concrete behavior during mixed-mode crack propagation, multiaxial tests are developed. The goal is to perform rich and discriminating tests by using state of the art techniques. The loadings are applied using a hexapod controlled by a 3D displacement system and the cracking state is analyzed via digital image correlation. To probe its consistency the experimental results are compared to numerical simulations with a nonlocal (i.e., gradient-based) damage model. The importance of using accurate boundary conditions while performing the numerical simulations is underlined. The numerical simulations are congruous to the experimental results only when full-field boundary conditions are prescribed, and only in that case it is possible to evaluate the validity or more generally the parameter sensitivity of the damage/fracture model under investigation.

引用

页码：329 / 340

页数：12

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