Showing papers in "International Journal of Solids and Structures in 2018"

TL;DR: In this article, a hierarchical honeycomb was applied to the honeycomb by replacing the sides of hexagons with smaller hexagons, and the analytical solutions to the mean crushing force and plateau stress were derived based on the simplified super folding element (SSFE) method.

TL;DR: In this article, a combined computational and experimental approach to investigate the high damage resistance of the Bouligand structure through a biomimetic composite material was carried out by performing specific fracture experiments on the helicoidal composites specimens, where it was found that crack twisting, driven by the fiber architecture, is the main fracture mechanisms.

TL;DR: In this article, a beam and plate metamaterial with interconnected local resonators is proposed to promote splitting and coupling between transverse and rotational vibration modes of the resonator chain.

TL;DR: In this paper, the authors developed a kind of lightweight cellular metastructure which incorporates coupled tailorable thermal expansion and tunable Poisson's ratio, which can achieve a wide range of positive, zero and especially negative values of both thermal expansion (TTE) and Poisson ratio simultaneously obtained.

TL;DR: In this paper, a series of 3D DEM simulations of triaxial compression tests on specimens with rolling resistance and non-spherical particles using an in-house code is presented, showing that the manners in which quantifiers of fabric and anisotropy approach their respective critical state values vary with shear strain levels.

TL;DR: In this article, a sub-scaled, integrally manufactured cylindrical shell with small-amplitude geometric imperfection was manufactured, analyzed and tested in a test facility and measurement system (including imperfection measurement and buckling test).

TL;DR: A discrete, finite dimensional, Lagrangian model is formulated for pantographic sheets with perfect pivots and to avoid to face the aforementioned pathologies, and it seems suitable for tackling future structural optimization problems.

TL;DR: The boundary conditions for the Steigmann-Ogden model were derived for a two-dimensional surface using general expression for surface energy that include surface tension as discussed by the authors, and closed-form expressions for all elastic fields in the domain were obtained.

TL;DR: In this paper, the simultaneous interaction of imperfections and energy barriers for spherical shells under external pressure was investigated and results for the energy barrier for perfect and imperfect spherical shells were presented.

TL;DR: In this paper, a truss and hinge finite element method is presented within a global coordinate system framework to accurately capture the geometric nonlinearities while allowing for small to moderate facet deformation.

TL;DR: In this article, the authors studied the acoustic band structure of tense-grity mass-spring chains and the possibility to tune the dispersion relation of such systems by suitably varying local and global prestress variables.

TL;DR: In this article, anisotropic plastic flow and ductile fracture of AA6013 aluminum sheet is investigated under quasistatic conditions, and the fracture loci are represented by the Oyane, Johnson-Cook and Hosford-Coulomb models.

TL;DR: In this article, a multiple scales asymptotic homogenization approach is proposed to study the effective properties of hierarchical composites with periodic structure at different length scales, exemplified by solving a linear elastic problem for a composite material with layered hierarchical structure.

TL;DR: In this paper, an attempt is made to generate the microstructure of short fiber composites through representative volume element (RVE) approach and then analyzed using mathematical theory of homogenization with periodic boundary conditions to estimate the homogenized or effective material properties.

TL;DR: In this paper, the structural properties and failure mechanisms of sandwich panels with hierarchical lattice cores were investigated through analytical modeling and detailed numerical simulations, and the role of structural hierarchy in tuning the mechanical behavior of sandwich structures was discussed.

TL;DR: In this paper, a fully three-dimensional displacement discontinuity method is developed to investigate slippage of weak horizontal interfaces and understand the effects of the slippages on fracture height growth.

TL;DR: In this article, the Gent hyperelastic model is applied to take into account the strain-stiffening effect of the elastomer and derive an analytical solution for the dynamic DE under homogeneous in-plane deformation.

TL;DR: In this paper, the postbuckling behavior of variable thickness VAT composite panels is analyzed using an efficient and robust semi-analytical approach, where both thickness and local fiber angle variation are required to effectively define "buckle-free" panels under compression loading.

TL;DR: In this article, a 3D realistic numerical modeling method is proposed to simulate the fracture process of concrete based on its meso-structure, which provides a new tool to study the fracture mechanism of concrete at the mesoscopic/microscopic levels under complex loading conditions.

TL;DR: In this article, a semi-analytical solution for the transverse local fields and overall transverse properties of composite materials with aligned multiple cylindrical nanofibers is presented.

TL;DR: In this paper, a new isotropic criterion that describes well yielding of randomly oriented face-centered polycrystalline metallic materials is proposed, based on generalized invariants of the stress deviator.

TL;DR: In this paper, a finite element modeling strategy is presented for simulating low-velocity impact and compression after impact tests on composite laminates using Abaqus/Explicit software.

TL;DR: In this paper, a new anisotropic ductile fracture criterion is developed based on the Lou-Huh fracture criterion (Lou et al., 2012) in an attempt to predict the forming severity of advanced high-strength steel (AHSS) sheets.

TL;DR: In this paper, Wu et al. proposed a novel positive/negative projection (PNP) of the effective stress tensor and the additive bi-scalar damage constitutive relation for concrete.

TL;DR: In this article, a shell-based finite element (FE) model is proposed for predicting the impact response and dominant failure mechanisms of fiber reinforced polymer matrix composites subject to low-velocity impact.

TL;DR: In this paper, a model based on micromechanical characterization and computational homogenization is developed to determine the mechanical behavior of rigid, closed-cell PU foams taking into account the microstructural features.

TL;DR: In this paper, a comprehensive experimental investigation was performed to characterize the fracture behavior of a rare-earth magnesium alloy sheet, ZEK100-O, under both proportional and non-proportional loading conditions.

TL;DR: In this article, the band gap and transmission properties of elastic waves in both linear and nonlinear periodic systems are discussed. And the transfer matrices are derived according to continuity conditions of incident SH wave, the stop band and transmission coefficient are obtained by Bloch's law.

TL;DR: In this paper, the authors proposed the use of stress points to resolve the zero-energy mode in non-ordinary state-based peridynamics with nearest-neighbor discretizations.

TL;DR: A data-driven computational framework combining Bayesian regression for imperfection-sensitive quantities of interest, uncertainty quantification and multi-objective optimization is developed for the design of complex structures to design ultra-thin carbon fiber deployable shells subjected to two bending conditions.