Showing papers in "Mechanics of Materials in 2017"

TL;DR: In this article, the Maxwell-Wagner-Sillars (MWS) mechanism is considered to be the source of the observed high dielectric constant for this class of nanocomposites.

TL;DR: In this paper, the effects of growth stress evolution in the thermally grown oxide (TGO) on failure mechanism of TBCs are investigated through developing both finite deformation mechanics-oxidation growth model and corresponding finite element method (FEM).

TL;DR: Based on laboratory tests and discrete element method (DEM), Wang et al. as discussed by the authors investigated the influences by mechanical property heterogeneity of different ingredients of asphalt mixture on the creep behavior of asphalt mixtures.

TL;DR: In this article, a methodology is presented for obtaining plasticity characteristics of bulk metallic materials from single run indentation data, which involves repeated FEM modelling, with the predicted outcome (load-displacement plot) being systematically compared with experiment.

TL;DR: In this article, the authors explored a numerical method to study the yield properties of closed-cell aluminum (Al) foam under triaxial loadings using a 3D Voronoi model.

TL;DR: In this paper, a nonlinear fatigue damage model coupled with the critical plane concept is proposed, embedded into the Ohno-Wang cyclic plasticity and implemented into the FEM software ABAQUS based on an implicit integration algorithm.

TL;DR: In this article, a phenomenological model for thermoplastic polymers involving several mechanisms is proposed, and the constitutive equations lie within the framework of thermodynamics and account for both viscoelasticty, viscoplasticity and ductile damage.

TL;DR: In this article, an extension of the recently developed incremental-secant mean-field homogenization (MFH) procedure in the context of elasto-plasticity to elastosimplastic composite materials while accounting for second statistical moments is presented.

TL;DR: In this article, high strain localization was observed predominantly in the regions filled by the polymer binder surrounding the sugar crystals and the damage evolution was quantified by calculating the Poisson's ratio and volumetric strain as a function of loading.

TL;DR: A thermoviscoelastic finite deformation constitutive model with structural and stress relaxation to capture the material behavior in the vicinity of the glass transition is developed for thermally activated amorphous SMPs in this article.

TL;DR: In this article, the authors compared the 2D and 3D flow curves of two heat-treated dual phase (DP) steels, DP800 and DP980, with actual microstructure under symmetric and periodic boundary conditions.

TL;DR: In this article, a shear-lag model is developed for the analysis of single fiber fragmentation tests for the characterization of the mechanical properties of the fiber/matrix interface in composite materials.

TL;DR: In this paper, a meso-structure finite element model was constructed to characterize the effect of thermo-oxidative ageing on compressive behaviors of 3-D carbon fiber/epoxy braided composites.

TL;DR: In this paper, a double contact problem of an inhomogeneously coated elastic layer indented against a homogeneous half-plane by a rigid punch is investigated under the assumptions that the contact at both interfaces is frictionless, the three materials possess different shear modulus, and the shear modulation of the functionally graded coating varies exponentially.

TL;DR: In this article, a detailed study on micromechanical constitutive modeling of unidirectional fiber reinforced and plain woven textile composites (PWTC) is performed, where the primary objective is to compute the equivalent homogenized effective properties of PWTC through its mesoscale model.

TL;DR: In this paper, a stochastic multi-scale approach for predicting mechanical properties of a carbon fiber coated with randomly oriented carbon nanotubes (CNT) known as a fuzzy fiber was developed.

TL;DR: In this paper, a framework of irreversible thermodynamics at small deformation is presented at first to model the thermo-mechanically coupled cyclic deformation of polymeric materials.

TL;DR: In this article, critical resolved shear stresses on basal and prismatic slip systems have been estimated using an in-situ tensile test inside a scanning electron microscope coupled with a slip trace analysis.

TL;DR: In this paper, a composite made of Randomly oriented Short Fibers (RSFC) and a computational homogenization is performed to investigate its effective properties and the area fraction is also varied to study its effect on the size of the Deterministic Representative Volume Element (DRVE).

TL;DR: In this paper, a 3D macroscopic constitutive model for iron-based shape memory alloys (Fe-SMAs) is presented, which uses different thermomechanical properties for austenite and martensite, and considers nonlinear coupling effects between phase transformation and plasticity.

TL;DR: In this article, a physical mechanism based crystal plasticity model is constructed by attributing the transformation- and reorientation-induced plasticity to the dislocation slipping at the interfaces between austenite and martensite phases, respectively.

TL;DR: In this paper, the skin effect is neglected, and a general parameterization of a hexagonal honeycomb, valid for constant wall thickness, double vertical walls (commercial), or for any combination of cell walls is generated.

TL;DR: In this article, the effect of temperature on the flexural and creep performance of glass/epoxy (GE), carbon/encoxy (CE) and glass/carbon/epoxide (GCE) hybrid composites has been studied.

TL;DR: In this article, the authors investigated the fatigue of extruded AZ31B magnesium alloy under stress-and strain-controlled loading conditions and found that the Jiang criterion gave satisfactory fatigue life predictions and a reasonable description of the cracking behavior.

TL;DR: In this paper, a composite dual phase internal state variable constitutive model was developed for Ti-6Al-4V, which includes diffusion assisted grain boundary sliding based physics in addition to a traditional slip-based plasticity.

TL;DR: In this paper, the authors revisited the indentation imprint shape, using a novel approach involving image comparison by manifold learning, and show that it is able to outperform the conventional approach for a variety of cases.

TL;DR: A previously published dislocation density-based flow stress model has been refined and made more consistent with underlying physical assumptions as discussed by the authors, which includes many temperature depen-......

TL;DR: In this paper, the interfacial properties of PBT/CNT nanocomposites with varying filler content from 0.1 to 0.5% are theoretically predicted and correlated with the tensile properties evaluated experimentally.

TL;DR: In this article, the authors investigated the non-linear behavior of geo-materials both in the reversible and irreversible thermodynamic regimes among the common Seth-Hill measures of deformation, and verified that the logarithmic (Hencky) strain produces the closest agreement with Diamond Anvill Cell experimental data obtained for a wide range of minerals.

TL;DR: In this paper, the authors considered the plane problem of a receding frictional nonlinear contact between an elastic graded layer and a homogeneous half-space when they are pressed against each other by a rigid stamp.