From Macro to Micro: Asphalt Mixture Responses under Realistic Tire Loads Using FEM-DEM Coupling
Publication: International Conference on Road and Airfield Pavement Technology 2023
ABSTRACT
Due to the increase in traffic volume and climatic changes, the road infrastructure is undergoing significant changes and challenges. As road network costs are primarily related to the deterioration of asphalt wearing layers, a comprehensive understanding of tire–pavement interaction is essential for optimizing asphalt pavement surface design. Currently, the majority of research on this interaction system is conducted in the frame of continuum mechanics, which is insufficient at capturing the discontinuity nature of asphalt mixtures. In this study, a coupling strategy incorporating finite element method (FEM) and discrete element method (DEM) was developed for the modeling of tire–pavement interaction, in which rolling tire loads derived from a FEM model were implemented into a DEM model of asphalt mixtures containing irregular particles. This FEM-DEM coupling algorithm allows the particle-scale analysis of asphalt mixture responses under realistic tire load conditions, which can provide insights for pavement surface design.
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Published In
International Conference on Road and Airfield Pavement Technology 2023
Pages: 37 - 46
History
Published online: Feb 6, 2024
ASCE Technical Topics:
- Asphalt pavements
- Coupling
- Design (by type)
- Discrete element method
- Engineering fundamentals
- Finite element method
- Highway and road design
- Infrastructure
- Load factors
- Materials characterization
- Materials engineering
- Methodology (by type)
- Mixtures
- Numerical methods
- Pavement design
- Pavements
- Sight distances
- Structural design
- Structural engineering
- Structural members
- Structural systems
- Transportation engineering
- Vehicle-pavement interaction
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