Journal ArticleDOI
A two-way coupled multiscale model for predicting damage-associated performance of asphaltic roadways
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This paper presents a quasi-static multiscale computational model with its verification and rational applications to mechanical behavior predictions of asphaltic roadways that are subject to viscoelastic deformation and fracture damage and is implemented using a finite element formulation.Abstract:
This paper presents a quasi-static multiscale computational model with its verification and rational applications to mechanical behavior predictions of asphaltic roadways that are subject to viscoelastic deformation and fracture damage. The multiscale model is based on continuum thermo-mechanics and is implemented using a finite element formulation. Two length scales (global and local) are two-way coupled in the model framework by linking a homogenized global scale to a heterogeneous local scale representative volume element. With the unique multiscaling and the use of the finite element technique, it is possible to take into account the effect of material heterogeneity, viscoelasticity, and anisotropic damage accumulation in the small scale on the overall performance of larger scale structures. Along with the theoretical model formulation, two example problems are shown: one to verify the model and its computational benefits through comparisons with analytical solutions and single-scale simulation results, and the other to demonstrate the applicability of the approach to model general roadway structures where material viscoelasticity and cohesive zone fracture are involved.read more
Citations
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Journal ArticleDOI
Effect of volumetric factors on the mechanical behavior of asphalt fine aggregate matrix and the relationship to asphalt mixture properties
TL;DR: In this article, the viscoelastic and tensile properties of asphalt concrete using fine aggregate matrix (FAM) have been systematically studied and the authors concluded that the use of FAM for modeling purposes requires accurate replication of FAM as it exists in the mixture, however, such strict requirements are not necessary for simpler, comparative evaluations.
Journal ArticleDOI
Analysis of load-induced top-down cracking initiation in asphalt pavements using a two-dimensional microstructure-based multiscale finite element method
TL;DR: In this article, the authors developed a two-dimensional microstructure-based multiscale finite element model, in which material properties on two physical length scales, i.e., the local (mixture level) and global (pavement level) scales, were incorporated in the computation and linked through a homogenization process.
Journal ArticleDOI
Computational homogenisation from a 3D finite element model of asphalt concrete-linear elastic computations
TL;DR: In this article, a 3D random mesoscale model of asphalt concrete is presented and the volume elements of a linear elastic composite are determined numerically for a variation of parameters in terms of a tolerable amount of statistical scatter.
Journal ArticleDOI
Multiscale Model for Asphalt Mixtures Subjected to Cracking and Viscoelastic Deformation
Jamilla Emi Sudo Lutif Teixeira,Yong-Rak Kim,Flavio V. Souza,David H. Allen,Dallas N. Little +4 more
TL;DR: In this article, the authors presented a multiscale computational model, along with its validation and calibration, to predict the damage-dependent behavior of asphalt mixtures subjected to viscoelastic deformation and cracking.
Journal ArticleDOI
A hysteretic multiscale formulation for nonlinear dynamic analysis of composite materials
TL;DR: In this article, a new multiscale finite element formulation is presented for nonlinear dynamic analysis of heterogeneous structures, which utilizes the hysteretic finite element method to model the micro-structure.
References
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Journal ArticleDOI
Yielding of steel sheets containing slits
TL;DR: In this article, a relation between extent of plastic yielding and external load applied was investigated, and panels containing internal and edge slits were loaded in tension and lengths of plastic zones were measured.
Book ChapterDOI
The mathematical theory of equilibrium cracks in brittle fracture
TL;DR: In this paper, the authors present a unified view of the way basic problems in the theory of equilibrium cracks are formulated and discuss the results obtained thereby, and the object of the theory is the study of the equilibrium of solids in the presence of cracks.
Book
Micromechanics: Overall Properties of Heterogeneous Materials
TL;DR: In this paper, the authors introduce basic elements of elasticity theory: foundations geometric foundations, kinematic foundations, dynamic foundations, constitutive relations elastostatic problems of linear elasticity boundary value problems and extremum principles three-dimensional problems solution of singular problems.
Journal ArticleDOI
A Continuum Model for Void Nucleation by Inclusion Debonding
TL;DR: In this paper, a boundary value problem simulating a periodic array of rigid spherical inclusions in an isotropically hardening elastic-viscoplastic matrix is analyzed and the effect of the triaxiality of the imposed stress state on nucleation is studied and the numerical results are related to the description of void nucleation within a phenomenological constitutive framework.
A continuum model for void nucleation by inclusion debonding
TL;DR: In this article, a boundary value problem simulating a periodic array of rigid spherical inclusions in an isotropically hardening elastic-viscoplastic matrix is analyzed and the effect of the triaxiality of the imposed stress state on nucleation is studied and the numerical results are related to the description of void nucleation within a phenomenological constitutive framework.