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Cohesive Zone Simulation of Mode I and Mixed-Mode Crack Propagation in Asphalt Concrete
A cohesive zone model (CZM) is employed to investigate fracture behavior of asphalt concrete. The separation and traction response along the cohesive zone ahead of a crack tip is modeled by an exponential cohesive law specifically tailored to describe the cracking in asphalt pavement materials by means of a softening cohesive law. This exponential cohesive model is implemented into a user-defined element (UEL) of the ABAQUS software. Using the CZM, first, crack propagation in a mode I single-edge notched beam (SE(B)) test is simulated such that the cohesive parameters of finite material strength and fracture energy are calibrated based upon the experimental results. Then, the mixed-mode SE(B) test is simulated using the calibrated cohesive parameters. The crack trajectory of the numerical simulation is found to compare favorably with experimental results.
Cohesive Zone Simulation of Mode I and Mixed-Mode Crack Propagation in Asphalt Concrete
A cohesive zone model (CZM) is employed to investigate fracture behavior of asphalt concrete. The separation and traction response along the cohesive zone ahead of a crack tip is modeled by an exponential cohesive law specifically tailored to describe the cracking in asphalt pavement materials by means of a softening cohesive law. This exponential cohesive model is implemented into a user-defined element (UEL) of the ABAQUS software. Using the CZM, first, crack propagation in a mode I single-edge notched beam (SE(B)) test is simulated such that the cohesive parameters of finite material strength and fracture energy are calibrated based upon the experimental results. Then, the mixed-mode SE(B) test is simulated using the calibrated cohesive parameters. The crack trajectory of the numerical simulation is found to compare favorably with experimental results.
Cohesive Zone Simulation of Mode I and Mixed-Mode Crack Propagation in Asphalt Concrete
Song, Seong Hyeok (author) / Paulino, Glaucio H. (author) / Buttlar, William G. (author)
Geo-Frontiers Congress 2005 ; 2005 ; Austin, Texas, United States
2005-10-09
Conference paper
Electronic Resource
English
Concrete , Asphalts , Cracking , Aggregates , Subgrades , Simulation , Pavements
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