24 August 2009 Numerical simulation of a crack in the cement stabilized stone using cohesive zone models
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Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 737511 (2009) https://doi.org/10.1117/12.839044
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China
Abstract
Reflective cracking arising from cracks in base materials has been a major distress of semi-rigid asphalt concrete road. Previous studies in base mixture cracking have typically considered the materials homogeneity. Adopting Digital Image Processing techniques and Finite Element Method, in the micro scale, the cement and aggregates are treated as distinct materials with different materials parameters. The potential crack zones are simulated by Cohesive Zone Model. The initiation and propagation of the crack in the cylindrical specimen under conventional Indirect Tensile Test (IDT) are modeled. The numerical results from the micromechanical analysis match well with the results from the macro experiment. Even though this study only presented a attempt to a numerical simulation of a simple IDT test, the theory and methods adopted by this study can be applied to the fatigue damage scenario under complicated loading conditions including material heterogeneity. It effectively allows researchers to link the micro-scale damage observed on the local scale with the real pavements failing on the global scale.
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Jing-hui Liu, Duan-yi Wang, "Numerical simulation of a crack in the cement stabilized stone using cohesive zone models", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737511 (24 August 2009); doi: 10.1117/12.839044; https://doi.org/10.1117/12.839044
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