Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

Pracownicy

dr inż. Mariusz Poński

Zakład Informatyki i Nauk Obliczeniowych (ZIiNO)
Zespół Inteligencji i Inżynierii Obliczeniowej (ZeIiIO)
staż naukowy
telefon: (+48) 22 826 12 81 wewn.: 321
pokój: 417
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Ostatnie publikacje
1.  Pokorska I., Poński M., Kubissa W., Libura T., Brodecki A., Kowalewski Z.L., Computational Fracture Evolution Analysis of Steel-Fiber-Reinforced Concrete Using Concrete Continuous Damage and Fiber Progressive Models, Materials, ISSN: 1996-1944, DOI: 10.3390/ma16165635, Vol.16, No.5635, pp.1-20, 2023

Streszczenie:
The process of concrete cracking is a common problem because the first micro-cracks due to the loss of moisture may appear even before the concrete is loaded. The application of fracture mechanics allows for a better understanding of this problem. Steel-fiber-reinforced concrete (SFRC) samples with a notch were subjected to a three-point bending test, and the results for crack energy were used to analyze the concrete’s material properties. In this paper, an experimental and numerical analysis of SFRC with rapid changes in the force (F) crack mouth opening displacement (CMOD) curve (F-CMOD) is presented. In order to obtain the relevant F-CMOD diagrams, three-point bending tests were carried out with non-standard samples with a thickness equal to one-third of the width of standard samples. For analysis purposes, crimped steel fibers were adopted. A probabilistic analysis of the most important parameters describing the material in question, such as peak strength, post-cracking strength, crack mouth opening displacement (CMOD), fracture energy, and the post-cracking deformation modulus, was conducted. The tests and the analysis of their results show that the quasi-static numerical method can be applied to obtain suitable results. However, significant dynamic effects during experiments that influence the F-CMOD curves are hard to reflect well in numerical calculations.

Słowa kluczowe:
concrete, finite element method (FEM) simulations, steel-fiber-reinforced concrete (SFRC), crack mouth opening displacement (CMOD), steel fibers

Afiliacje autorów:
Pokorska I. - IPPT PAN
Poński M. - IPPT PAN
Kubissa W. - Politechnika Warszawska (PL)
Libura T. - IPPT PAN
Brodecki A. - IPPT PAN
Kowalewski Z.L. - IPPT PAN
140p.

Abstrakty konferencyjne
1.  Poński M., Pokorska-Służalec I., Burczyński T., Multiscale Modeling of Concrete with Nano-Ingredients, COMPLAS 2023, XVII International Conference on Computational Plasticity. Fundamentals and Applications, 2023-09-05/09-07, Barcelona (ES), pp.1, 2023
2.  Pokorska I., Poński M., Kubissa W., Libura T., Brodecki A., Kowalewski Z., ANALYSIS OF CRACKING EVOLUTION AND FRACTURE ENERGY CHANGE OF STEEL FIBER-REINFORCED CONCRETE, CMM-SolMech 2022, 24th International Conference on Computer Methods in Mechanics; 42nd Solid Mechanics Conference, 2022-09-05/09-08, Świnoujście (PL), No.237, pp.1-1, 2022
3.  Pokorska I., Poński M., Kubissa W., Libura T., Brodecki A., Kowalewski Z.L., PROBABILISTIC STUDY ON CRACKING EVOLUTION AND FRACTURE ENERGY CHANGE OF STEEL FIBER-REINFORCED CONCRETE, ICEM, 19th International Conference on Experimental Mechanics, 2022-07-17/07-21, Kraków (PL), pp.363-364, 2022

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