Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Micromechanical fracture modeling of asphalt concrete using a single-edge notched beam test
Abstract Cracks in asphalt pavements create irreversible structural and functional deficiencies that increase maintenance costs and decrease lifespan. Therefore, it is important to understand the fracture behavior of asphalt mixtures, which consist of irregularly shaped and randomly oriented aggregate particles and mastic. A two-dimensional clustered discrete element modeling (DEM) approach is implemented to simulate the complex crack behavior observed during asphalt concrete fracture tests. A cohesive softening model (CSM) is adapted as an intrinsic constitutive law governing material separation in asphalt concrete. A homogenous model is employed to investigate the mode I fracture behavior of asphalt concrete using a single-edge notched beam (SE(B)) test. Heterogeneous morphological features are added to numerical SE(B) specimens to investigate complex fracture mechanisms in the process zone. Energy decomposition analyses are performed to gain insight towards the forms of energy dissipation present in fracture testing of asphalt concrete. Finally, a heterogeneous model is used to simulate mixed-mode crack propagation.
Micromechanical fracture modeling of asphalt concrete using a single-edge notched beam test
Abstract Cracks in asphalt pavements create irreversible structural and functional deficiencies that increase maintenance costs and decrease lifespan. Therefore, it is important to understand the fracture behavior of asphalt mixtures, which consist of irregularly shaped and randomly oriented aggregate particles and mastic. A two-dimensional clustered discrete element modeling (DEM) approach is implemented to simulate the complex crack behavior observed during asphalt concrete fracture tests. A cohesive softening model (CSM) is adapted as an intrinsic constitutive law governing material separation in asphalt concrete. A homogenous model is employed to investigate the mode I fracture behavior of asphalt concrete using a single-edge notched beam (SE(B)) test. Heterogeneous morphological features are added to numerical SE(B) specimens to investigate complex fracture mechanisms in the process zone. Energy decomposition analyses are performed to gain insight towards the forms of energy dissipation present in fracture testing of asphalt concrete. Finally, a heterogeneous model is used to simulate mixed-mode crack propagation.
Micromechanical fracture modeling of asphalt concrete using a single-edge notched beam test
Kim, Hyunwook (Autor:in) / Wagoner, Michael P. (Autor:in) / Buttlar, William G. (Autor:in)
2008
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Micromechanical fracture modeling of asphalt concrete using a single-edge notched beam test
| British Library Online Contents | 2009
Micromechanical fracture modeling of asphalt concrete using a single-edge notched beam test
| Springer Verlag | 2009
Micromechanical fracture modeling of asphalt concrete using a single-edge notched beam test
| Springer Verlag | 2008
Micromechanical fracture modeling of asphalt concrete using a single-edge notched beam test
| Online Contents | 2009
Single-Edge Notched Disk Fracture Test for Asphalt Concrete
| British Library Online Contents | 2016