By Eyad Masad, Vassilis Panoskaltsis, Linbing Wang
This ''Geotechnical particular Publication'' comprises papers provided throughout the symposium on Mechanics of versatile Pavements, a part of the 2005 Joint ASME/ASCE/SES convention on Mechanics and fabrics, held in Baton Rouge, Louisiana on June 1-3, 2005. The papers during this book specialize in very important themes in pavement engineering, similar to: modeling asphalt concrete reaction on the microstructural point, improvement and numerical implementation of constitutive versions, and experimental characterization of asphalt concrete lower than assorted loading and environmental stipulations. additionally they spotlight the numerical implementation of micromechanical versions that concentrate on developing the linkage among the houses of asphalt concrete parts and the macroscopic reaction. This complaints is a synthesis of the new advances in pavement mechanics, and may be invaluable to engineers operating with pavement research, layout, and function prediction
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Extra info for Asphalt Concrete : Simulation, Modeling, and Experimental Characterization
Shashidhar, N. (2002). "Characterization of Air Void Distribution in Asphalt Mixes Using X-Ray Computed Tomography," Journal of Materials in Civil Engineering, Vol. 14, No. , pp 122-129. , N. U. Bahia HU, and S. Kose (2001). "Modeling And Experimental Measurements of Strain Distribution In Asphalt Mixes," J. Trans. Res. Record, Vol 127, No. C. Mora, P. (1992). "A Lattice Solid Model for Rock Rheology and Tectonics," The Seismic Simulation Project Tech. , Vol. 3-28, Institut de Physique du Globe, Paris.
1999). "Nonlinear Viscoelastic and Fatigue Properties of Asphalt Binders," J. Assoc. , Vol. 68, pp. 1-34. , and Pijaudier-Cabot, G. (1990). "Random particle simulation of damage and fracture in particulate or fiber-reinforced composites", Damage Mechanics in Engineering Materials, Trans. ASME, AMD 109, 41-55. , C. L. Napier and R. Roque. (2002). "Simulation of the Cracking Behavior of Asphalt Mixtures Using Random Assemblies of Displacement Discontinuity Boundary Elements," Proc. 15th ASCE Eng.
The dilation parameter p can be determined experimentally from a triaxial test using the ratio of lateral and uniaxial viscoplastic strain rate as follows: Fig. 2. Relationship between Dilation Parameter and Anisotropy for d = 1. PARAMETRIC ANALYSIS The model is implemented in FE analysis by using an implicit numerical integration algorithm, called Euler backward method, carried out in a time-step control. The equations that govern the evolution of stress, internal variables, inelastic deformation, and nonlinear parameters are discretized in an incremental format in a user defined material subroutine (UMAT) in the ABAQUS package.