The Computational Method of Predicting the Crack Path in Confrontation with Laboratory Tests
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Faculty of Civil Engineering and Architecture, Lublin University of Technology, ul. Nadbystrzycka 38D, 20–618, Lublin, Poland
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Jerzy Podgórski
Faculty of Civil Engineering and Architecture, Lublin University of Technology, ul. Nadbystrzycka 38D, 20–618, Lublin, Poland
Adv. Sci. Technol. Res. J. 2023; 17(2):90-110
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ABSTRACT
The paper presents the results of laboratory tests and computer simulations of the pull-out test of a rod embedded in a concrete cylindrical sample. The main purpose was to verify the force-displacement relationship and the crack paths. The X-FEM method of fracture simulation was used. The authors compared a simple maximum principal stress criterion, as well as their own method of simulating fracture propagation in brittle materials, implemented with the user subroutine in the Simulia Abaqus FEA system. A number of conclusions were obtained in the analyzes, related to the influence of the finite element mesh size, the method of modeling the rod and its contact with concrete. The advantages of own method were presented. the reasons for the differences between the results of simulations and laboratory tests were presented.