Ability of localizing gradient damage to determine size effect in concrete beams
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Cracow University of Technology, Faculty of Civil Engineering, Cracow, Poland
Submission date: 2023-10-30
Final revision date: 2023-11-26
Acceptance date: 2023-11-27
Online publication date: 2024-02-18
Publication date: 2024-04-30
Corresponding author
Adam Wosatko   

Faculty of Civil Engineering, Cracow University of Technology, Warszawska 24, 31-155, Cracow, Poland
The objective of the paper is to demonstrate the potential of the localizing gradient dam- age model in size effect simulations. Three different gradient activity functions for variable internal length scale are considered. Numerical simulations for an unnotched beam under three-point bending are referred to the experiment performed by Gr´egoire et al. (2013). A confrontation with the conventional gradient damage model as well as mesh sensitivity studies are also presented. It is proved that the localizing gradient damage model with differ- ent variants of the gradient activity function can reproduce the size effect quite reasonably.
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