Journal
JOURNAL OF TESTING AND EVALUATION
Volume 45, Issue 4, Pages 1301-1315Publisher
AMER SOC TESTING MATERIALS
DOI: 10.1520/JTE20150456
Keywords
semi-analytical finite element method; asphalt pavement structural responses; graphical user interface; viscoelastic material properties; static and dynamic analyses
Funding
- Federal Highway Research Institute [04.0259/2012/NGB]
- German Research Foundation [FOR 2089]
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To effectively investigate the mechanical performance of asphalt pavements, software named SAFEM with a user friendly graphical user interface (GUI) was developed. It is based on the semi-analytical finite element (FE) method, which is a three-dimensional FE algorithm that only requires a two-dimensional mesh by incorporating the Fourier series in the third dimension. SAFEM is able to analyze static and dynamic responses of asphalt pavements under stationary or moving loads. Besides linear elasticity, a viscoelastic material model for asphalt layers has also been integrated. Verification was carried out to test and explore the functionality of the software package. We showed that SAFEM is an accurate tool for the fast prediction of asphalt pavement responses, such as the surface deflection and the strain/stress at response points. Furthermore, SAFEM provided a flexible, robust platform for the future development in the numerical simulation of asphalt pavements.
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