Rok 2018

• A three-dimensional meso-scale approach with cohesive elements to concrete fracture based on X-ray μCT images.

  Publikacja

  • W. Trawiński
  • J. Tejchman
  • J. Bobiński

  - ENGINEERING FRACTURE MECHANICS - Rok 2018

  Artykuł omawia wyniki numeryczne dotyczące pękania betonu uzyskane stosując trójwymiarowy model mezoskopowy z elementami kohezyjnymi. Obliczenia trójwymiarowe zostały wykonane dla zginanej belki betonowej. Beton został opisany jako model 3-fazowy. Mikrostruktura betonu odpowiadała zdjęciom tomograficznym. Wyniki numeryczne zostały porównane z wynikami doświadczalnymi. Uzyskano b. dobra zgodność między wynikami numerycznymi i doświadczalnymi.

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• Mesoscopic simulations of crack propagation in concrete using cohesive elements

  Publikacja

  • W. Trawiński
  • J. Bobiński
  • J. Tejchman

  - Rok 2018

  The paper presents results of two-and three-dimensional meso-scale simulations of fracture in notched concrete beams subjected to three-point bending test. Concrete was assumed as a 3-phase material composed of aggregate grains placed in the cement matrix with Interfacial Transitional Zones (ITZs) between then. In 2D simulations macro-voids were also taken into account. The particle distribution was taken from real concrete beams...

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Rok 2016

• Fracture simulations in concrete beam under bending using a mesoscopic model with cohesive elements

  Publikacja

  • W. Trawiński

  - Rok 2016

  The main aim of this paper was to investigate a complex fracture process in a concrete beam subjected to 3-point bending test by means of the 2D meso-scale FEM with 4-node cohesive elements embedded in the initial mesh of 3-node solid elements. The material heterogeneity was taken into account by considering 3 different phases (aggregate, cement matrix, ITZs) on the basis of randomly generated internal structure of concrete and...

• Two-dimensional simulations of concrete fracture at aggregate level with cohesive elements based on X-ray lCT images

  Publikacja

  • W. Trawiński
  • J. Bobiński
  • J. Tejchman

  - ENGINEERING FRACTURE MECHANICS - Rok 2016

  The paper presents results of two-dimensional meso-scale simulations of fracture in notched concrete beams subjected to three-point bending test. Concrete was assumed as a 4-phase material composed of aggregate grains placed in the cement matrix, interfacial transitional zones (ITZs) and macro-voids. The particle distribution was taken from real concrete beams on the basis of X-ray lCT images. Comprehensive numerical analyses were carried...

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