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- W609085172 abstract "A viscoplastic constitutive law is proposed for the macro-behavior of asphalt-aggregate mixtures. The proposed model is motivated by the following observations: (1) asphalt-aggregate mixtures exhibit residual deformation; (2) asphalt-aggregate mixtures are rate- and temperature-dependent; (3) the presence of an elastic volumetric-deviatoric coupling (ie dilation); and (4) the accumulation of permanent deformation is history-dependent. The proposed model is designed to possess these characteristics. The model consists of two components acting in parallel. The first component is a linear (deviatoric) viscoelastic model consisting of n Maxwell elements. The second is an elastoplastic component, where nonlinear elasticity is used to achieve the desired volumetric-deviatoric coupling together with a J2-plasticity model with linear isotropic and kinematic hardening. A set of laboratory tests required to determine the constitutive constants is also presented. The proposed constitutive law was incorporated into a finite element program. The states of stresses, strains, and displacements obtained from a plane strain simulation of a standard pavement section subjected to repetitive loading is provided to illustrate the performance of the proposed model. (A) For the covering abstract see IRRD 883133." @default.
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- W609085172 date "1996-01-01" @default.
- W609085172 modified "2023-09-24" @default.
- W609085172 title "AN ELASTOPLASTIC CONSTITUTIVE LAW FOR ASPHALT-AGGREGATE MIXTURES" @default.
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