Abstract
The development of high speed computers has encouraged researchers to increasingly utilize the finite element method (FEM) to simulate more realistic pavement structures and loading conditions in their efforts to predict the performance of asphalt pavem ents. Analysis of pavement materials using mechanistic constitutive materials models is an integral part of these efforts. An elastic viscoplastic continuum model based on Perzyna’s viscoplastic theory and the Drucker-Prager yield function is proposed to simula te the permanent deformation of a hot mix asphalt (HMA) mixture at WesTrack. Compressive strength tests were performed at differen strain rates and confinement pressures to obtain the elastic-viscoplastic constitutive material parameters. The test temperature was 60 °C based on the critical temperature for permanent deformation at 12.5 mm of the WesTrack replacement section. Permanent deformation of the replacement section was simulated by the three dimensional FEM program, ABAQUS. The same trend of rutting profiles was obtained for both the measured and the simulated rutting profiles.
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Park, DW. Simulation of rutting profiles using a viscoplastic model. KSCE J Civ Eng 11, 151–156 (2007). https://doi.org/10.1007/BF02823895
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DOI: https://doi.org/10.1007/BF02823895