Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Heterogeneous Fracture Simulation of Asphalt Mixture under Beam Bending Test with Cohesive Zone Modeling
Three points beam bending test has been used widely to investigate the cracking behavior of asphalt mixtures under low temperature, and fracture parameters can be obtained. In this paper, heterogeneous fracture modeling technology is presented to simulate crack evolution in asphalt mixture under beam bending test. Cutting surface images of three types of asphalt mixtures, such as ECA-10, SMA-13, and AC-13 are generated by c2-Dimensional (2D) scanning technology and digital image processing (DIP) method. Finally, 2D heterogeneous numerical models are created for asphalt mixture specimen, and numerical cohesive zone model is utilized to estimate the crack resistance of the interface based on laboratory fracture tests. The inception and propagation of main macro-cracks are carefully studied for three types of asphalt mixtures. Load-displacement curves are plotted, corresponding tensile strength and fracture strain energy density are calculated. The analyzing results of numerical simulation are proved to be quite consistent with actual experimental test, the reliability of numerical model is verified.
Heterogeneous Fracture Simulation of Asphalt Mixture under Beam Bending Test with Cohesive Zone Modeling
Three points beam bending test has been used widely to investigate the cracking behavior of asphalt mixtures under low temperature, and fracture parameters can be obtained. In this paper, heterogeneous fracture modeling technology is presented to simulate crack evolution in asphalt mixture under beam bending test. Cutting surface images of three types of asphalt mixtures, such as ECA-10, SMA-13, and AC-13 are generated by c2-Dimensional (2D) scanning technology and digital image processing (DIP) method. Finally, 2D heterogeneous numerical models are created for asphalt mixture specimen, and numerical cohesive zone model is utilized to estimate the crack resistance of the interface based on laboratory fracture tests. The inception and propagation of main macro-cracks are carefully studied for three types of asphalt mixtures. Load-displacement curves are plotted, corresponding tensile strength and fracture strain energy density are calculated. The analyzing results of numerical simulation are proved to be quite consistent with actual experimental test, the reliability of numerical model is verified.
Heterogeneous Fracture Simulation of Asphalt Mixture under Beam Bending Test with Cohesive Zone Modeling
Zhao, Yanjing (Autor:in) / Jiang, Ling (Autor:in) / Zhou, Lan (Autor:in) / Jiang, Jiwang (Autor:in)
Transportation Research Congress 2017 ; 2017 ; Beijing, China
Transportation Research Congress 2017 ; 102-116
03.10.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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