Showing papers in "Composite Structures in 2014"

TL;DR: In this paper, a qualitative analysis using SEM images was carried out to observe the surface morphology and microstructure of cement composites with different amounts of silica fume and CNT addition.

TL;DR: In this article, the analysis of flexural strength and free vibration of carbon nanotube reinforced composite cylindrical panels is carried out by employing an equivalent continuum model based on the Eshelby-Mori-Tanaka approach.

TL;DR: A comprehensive review of past and current research work published on the dynamic response of fiber-metal laminates subjected to low velocity impact is given in this paper, which concludes with detailed discussions on the future works needed for fibre-metal Laminates.

TL;DR: In this article, the voxel method and a continuum damage model are used in a finite element analysis to compute stress-strain curves for an orthogonal 3D woven composite under tensile loading.

TL;DR: Progressive damage models based on continuum damage mechanics were used in combination with cohesive interface elements to predict the structural response and the failure mechanisms of composite laminates subjected to low-velocity impact.

TL;DR: In this paper, a dynamic stability analysis of carbon nanotube-reinforced functionally graded (CNTR-FG) cylindrical panels under static and periodic axial force by using the mesh-free kp-Ritz method is presented.

TL;DR: In this article, a local meshless method was developed based on the local Petrov-Galerkin weak-form formulation combined with shape functions having the Kronecker delta function property, constructed by the Kriging interpolation.

TL;DR: In this paper, a physics-based modeling procedure is presented to predict the thermal damage of composite material when struck by lightning using the Finite Element Method with non-linear material models to represent the extreme thermal material behaviour of the composite material (carbon/epoxy) and an embedded copper mesh protection system.

TL;DR: In this paper, the forced vibration behavior of carbon-nanotube reinforced composite (CNTRC) beams, uniform distribution (UD) and three types of functionally graded (FG) distribution patterns of SWCNT reinforcements are considered.

TL;DR: In this article, an effective, simple, robust and locking-free plate formulation is proposed to analyze the static bending, buckling, and free vibration of homogeneous and functionally graded plates.

TL;DR: In this paper, peak amplitude and peak frequency were selected as the best cluster-definition features from nine AE parameters by Laplacian score and correlation analysis, principal component analysis and k-means++ algorithm and repeatability and similarity analysis of the clusters in AE registration of different specimens.

TL;DR: In this paper, the influence of the free vibration behavior of rotating carbon nanotube reinforced composite (CNTRC) truncated conical shells is examined. And the initial mechanical stresses are obtained by solving the dynamic equilibrium equations.

TL;DR: In this paper, the authors investigated the piezoresistive sensitivity and stability of CNT/cement mortar composites with low water-binder ratio and the effect of absorbed water on the composites was also investigated.

TL;DR: In this paper, the behaviour of RC beams strengthened with NSM FRP bars was experimentally investigated and the effects of material type, epoxy properties, bar size and the number of NSM bars were studied.

TL;DR: In this paper, a meshless local Petrov-Galerkin approach based on the moving Kriging interpolation technique is developed for geometrically nonlinear thermoelastic analysis of functionally graded plates in thermal environments.

TL;DR: In this article, a numerical model for accurately predicting the delamination propagation in multidirectional laminates under mode I and mixedmode I/II loadings using the cohesive element is proposed.

TL;DR: In this paper, the nonlinear free vibration of functionally graded (FG) nanobeams with immovable ends was studied using the nonlocal elasticity within the frame work of Euler-Bernoulli beam theory with von karman type nonlinearity.

TL;DR: In this paper, a direct method using computed tomography to determine finite element models based on the real geometry of the textile reinforcement is presented, where the determination of the fiber direction at each point of the model is detailed.

TL;DR: In this article, the behavior of single bricks and small masonry pillars strengthened by means of fabric reinforced cementitious matrix systems made with glass-fiber grids is discussed both from an experimental and numerical standpoint.

TL;DR: In this article, the polyurethane foam filled pyramidal lattice core sandwich panel is fabricated in order to improve the energy absorption and low velocity impact resistance, based on the compression tests, a synergistic effect that the foam filled sandwich panels have a greater load carrying capacity compared to the sum of the unfilled specimens and the filled polyurehane block is found.

TL;DR: In this paper, the stacking sequence table (SST) was introduced for the optimal design of laminated composite structures with ply drops, where the SST describes the sequence of ply-drops ensuring the transition between a thick guide laminate and a thinner one.

TL;DR: In this article, the buckling and free vibration of magnetoelectroelastic nanoplate resting on Pasternak foundation is investigated based on nonlocal Mindlin theory, where the in-plane electric and magnetic fields can be ignored for nanoplates.

TL;DR: In this article, the bending and free flexural vibration behavior of sandwich plates with carbon nanotube (CNT) reinforced facesheets are investigated using QUAD-8 shear flexible element developed based on higher-order structural theory.

TL;DR: In this paper, a 3D exact solution for the free vibrations of arbitrarily thick functionally graded rectangular plates with general boundary conditions is presented, where the displacement fields are constructed adequately smooth throughout the entire solution domain, an exact solution is obtained based on Rayleigh-Ritz procedure by the energy functions of the plate.

TL;DR: In this article, an analytical solution for the simply supported piezoelectric nanoshell by representing displacement components in the double Fourier series was given for a simply supported PNE, and the differential quadrature method was employed to obtain numerical solutions of PNEs under various boundary conditions.

TL;DR: In this paper, the large amplitude vibration behavior of cylindrical panels resting on elastic foundations in thermal environments was investigated, and two kinds of carbon nanotube-reinforced composite panels, namely, uniformly distributed and functionally graded reinforcements, were considered.

TL;DR: In this article, the potential use of closed-cell aluminium alloy integral-skin foams as stiffening elements for aluminium alloy thin-walled structures that are main basic components in the concept and design of automotive body parts is evaluated.

TL;DR: In this paper, the elastic moduli depend on the angle of inclination of the ligaments with respect to the grid of lines connecting the centers of the rings of a hexachiral and tetrachiral honeycomb.

TL;DR: In this paper, the authors investigate how the parameters governing the formation of defects impact the set of optimal solutions for a multi-objective optimization problem, where in-plane stiffness and buckling load are simultaneously maximized.

TL;DR: In this article, the static behavior of doubly-curved laminated composite shells and panels is investigated using a two-dimensional General Higher-order Equivalent Single Layer (GHESL) approach, based on the Carrera Unified Formulation (CUF).