Mechanical Fracture Parameters of Concrete Determined From 3PBT of Multiple Specimen Sizes Using Inverse Analysis

Mechanical Fracture Parameters of Concrete Determined From 3PBT of Multiple Specimen Sizes Using Inverse Analysis

Paper in proceedings (conference paper)

This paper presents selected results of a comprehensive experimental-computational procedure focused on the determination of mechanical fracture parameters of concrete, irrespective of the specimen size and geometry. The methodology entails testing specimens of varying dimensions and configurations, followed by an advanced evaluation and a soft computing-based identification. In this study, mechanical fracture parameters were identified using data from three-point bending fracture tests conducted on specimens of three different sizes, each with two distinct notch depths. The identification was carried out for individual specimens, and the obtained parameters were then used in numerical simulations of the tests, which were compared with experimental results. The study analyzed the dependence of the identified parameters on specimen size and compared these findings with experimental data.

This paper presents selected results of a comprehensive experimental-computational procedure focused on the determination of mechanical fracture parameters of concrete, irrespective of the specimen size and geometry. The methodology entails testing specimens of varying dimensions and configurations, followed by an advanced evaluation and a soft computing-based identification. In this study, mechanical fracture parameters were identified using data from three-point bending fracture tests conducted on specimens of three different sizes, each with two distinct notch depths. The identification was carried out for individual specimens, and the obtained parameters were then used in numerical simulations of the tests, which were compared with experimental results. The study analyzed the dependence of the identified parameters on specimen size and compared these findings with experimental data.

three-point bending, inverse analysis, identification

three-point bending, inverse analysis, identification

LIPOWCZAN, M.; ŠOMODÍKOVÁ, M.; LEHKÝ, D.

11.09.2025

American Institute of Physics

9780735452459

AIP Conference Proceedings Vol. 3315

AIP conference proceedings

United States of America

400034-1

400034-4

4

https://pubs.aip.org/aip/acp/article-abstract/3315/1/400034/3363188/Mechanical-fracture-parameters-of-concrete?redirectedFrom=PDF

ICNAAM2023_Lipowczan et al