Calculations of fracture process zones on meso-scale in notched concrete beams subjected to three-point bending |
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| Authors: | Ł. Skarżyński J. Tejchman |
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| Affiliation: | 1. Department of Industrial Technology and Construction, Faculty of Engineering and Architecture, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium;2. Magnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 904, 9052 Zwijnaarde, Belgium;1. College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China;2. College of Civil Engineering, Chongqing University, Chongqing 400045, China |
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| Abstract: | The paper describes investigations on fracture process zones (FPZ) at meso-scale in notched concrete beams subjected to quasi-static three-point bending. The simulations were carried out with the FEM using isotropic damage constitutive model enhanced by a characteristic length of micro-structure by means of a non-local theory. Concrete was modelled as a random heterogeneous three-phase material. The effect of the beam size, aggregate distribution, aggregate density, aggregate shape, aggregate size and characteristic length on the width and shape of FPZ and load-displacement curve was numerically investigated. The numerical results were compared with own test results using Digital Image Correlation method (Skar?yński et al., 2009a), the tests by Le Bellěgo et al., (2003) and the size effect law by Ba?ant (2004). |
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