Abstract
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.
Original language | English (US) |
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Pages (from-to) | 189-198 |
Number of pages | 10 |
Journal | Geotechnical Special Publication |
Issue number | 130-142 |
State | Published - 2005 |
Externally published | Yes |
Event | Geo-Frontiers 2005 - Austin, TX, United States Duration: Jan 24 2005 → Jan 26 2005 |
All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Architecture
- Building and Construction
- Geotechnical Engineering and Engineering Geology
Keywords
- Asphalt concrete
- Cohesive parameters
- Cohesive zone model (CZM)
- Fracture behavior
- Mixed-mode crack propagation
- Single-edge notched beam (SE(B))