Comparison between experimental and numerical results of mixed-mode crack propagation in concrete: Influence of boundary conditions choice. (October 2017)

• Record Type: Journal Article
• Authors: Carpiuc-Prisacari, A.; Poncelet, M.; Kazymyrenko, K.; Hild, F.; Leclerc, H.
• Is Part Of: Cement and concrete research. Volume 100(2017)
• Page Start: 329
• Page End: 340
• Publication Date: 2017-10
• Subjects: Concrete -- Damage -- Digital image correlation -- Mixed-mode fracture -- Multiaxial; Cement -- Periodicals; Cement -- Research -- Periodicals; Concrete -- Periodicals; Concrete -- Research -- Periodicals; Ciment -- Périodiques; Béton -- Périodiques; Cement; Concrete; Periodicals; 620.135
• DOI: 10.1016/j.cemconres.2017.05.003
• Languages: English
• ISSNs: 0008-8846

Abstract

Abstract: 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.