Impact response analysis of stiffened sandwich functionally graded porous materials doubly-curved shell with re-entrant honeycomb auxetic core

Fu, Tao; Hu, Xiangping; Yang, Chao

doi:10.1016/j.apm.2023.08.024

Cited by 45 publications

(4 citation statements)

References 44 publications

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“…Thus, the deformation and equivalent von Mises stress distribution results for the 3D printed Voronoi lattice structures under compressive load, presented in Figure 10b,c, may accurately identify the regions of high stress in the structures. In contrast to previous research [52][53][54][55][56][57][58][59][60][61][62], lattice structures similar to those in our current study exhibited improved physical and mechanical characteristics, particularly in terms of a more significant enhancement in compressive strength and energy absorption. Based on the mechanical test results, it can be concluded that using computationally generated (FEA) compression test data, combined with actual measurements, could be an effective method for characterizing the mechanical deformation behavior of 3D printed Voronoi configurations.…”

Section: Fea Validation Of Experimental Resultscontrasting

confidence: 98%

3D Printed Voronoi Structures Inspired by Paracentrotus lividus Shells

Efstathiadis,

Symeonidou,

Tsongas

et al. 2023

Designs

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The present paper investigates the mechanical behavior of a biomimetic Voronoi structure, inspired by the microstructure of the shell of the sea urchin Paracentrotus lividus, with its characteristic topological attributes constituting the technical evaluation stage of a novel biomimetic design strategy. A parametric design algorithm was used as a basis to generate design permutations with gradually increasing rod thickness, node count, and model smoothness, geometric parameters that define a Voronoi structure and increase its relative density as they are enhanced. Physical PLA specimens were manufactured with a fused filament fabrication (FFF) printer and subjected to quasi-static loading. Finite element analysis (FEA) was conducted in order to verify the experimental results. A minor discrepancy between the relative density of the designed and printed models was calculated. The tests revealed that the compressive behavior of the structure consists of an elastic region followed by a smooth plateau region and, finally, by the densification zone. The yield strength, compressive modulus, and plateau stress of the structure are improved as the specific geometric parameters are enhanced. The same trend is observed in the energy absorption capabilities of the structure while a reverse one characterizes the densification strain of the specimens. A second-degree polynomial relation is also identified between the modulus, plateau stress, and energy capacity when plotted against the relative density of the specimens. Distinct Voronoi morphologies can be acquired with similar mechanical characteristics, depending on the design requirements and application. Potential applications include lightweight structural materials and protective gear and accessories.

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Section: Fea Validation Of Experimental Resultscontrasting

confidence: 98%

3D Printed Voronoi Structures Inspired by Paracentrotus lividus Shells

Efstathiadis,

Symeonidou,

Tsongas

et al. 2023

Designs

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“…Stiffened panels play a crucial role in aerospace, automotive, and marine structures, where their ability to withstand compressive loads is of paramount importance [2]. Fu et al [3] previously studied the impact characteristics of a reinforced sandwich of functionally graded porous materials with a hyperbolic shell with a concave-angled honeycomb auxetic core. The results showed that reinforced structures have significant advantages in impact energy absorption.…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis for Carbon and Glass Fibre Reinforced Hybrid Composite Stiffened Panels

Han,

Dong

2024

J. Compos. Sci.

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Composite laminated structural panels are widely used in various industries such as aerospace and machinery because of their light weight, large specific stiffness, and strong fatigue resistance. As a typical engineering structure, the composite stiffened plate is designed to enhance the bearing capacity of the laminated plate. In this study, composite stiffened panels reinforced by carbon and/or E-glass fibres are modelled by finite element analysis (FEA) using Ansys. Nonlinear structural analysis is employed to find the critical buckling load. Three different skin layups, i.e., [45°/−45°/90°/0°]S, [90°/0°/90°/0°]S, and [60°/−30°/90°/0°]S, are studied. For each ply angle combination, different ply material combinations are studied. The cost and weight of each combination formed by applying different ply materials to the skin and stiffeners are studied. The results show that hybrid reinforcement in the stiffened panels reduces costs and maintains high buckling loads. Carbon/epoxy composites as the outer layers also reduce costs and maintain acceptable buckling loads without compromising the overall performance. Customized composite designs in terms of cost and weight can be achieved while maintaining critical buckling loads.

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“…Li et al, [3] proposed a new auxetic structure with mechanical properties that are determined by the finite element method and experiments. By using the first -order shear deformation theory, the vibration behavior and load capacity of sandwich plates with honeycomb auxetic core and porous materials facesheets are evaluated by Fu et al, [4]. Lieu ________ et al, [5] used the thirdorder shear deformation theory to investigated the influence of geometric characteristics of the honeycomb core layer on the static bending and buckling of nanobeams.…”

Section: Introduction *mentioning

confidence: 99%

Dynamic Analysis of Hexagon Honeycomb Sandwich Plate Resting on Elastic Foundations

Vũ Minh,

Tran

2024

MaP

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Dynamic analysis of hexagon honeycomb sandwich plate resting on elastic foundations are presented. Modeling is formed by 3 layers, in which core layer is hexagon honeyconb and facesheet layers is isotropic material. The Reddy’s first order shear deformation plate theory and Galerken method are used to investigate the influnce of elastic foundations, geometrical parameters and material properties of hexagon honeycomb on the deflection – time curve. The value of the natural frequency was compared to the results reported in other works forevaluating the acuracy of used method.

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Impact response analysis of stiffened sandwich functionally graded porous materials doubly-curved shell with re-entrant honeycomb auxetic core

Cited by 45 publications

References 44 publications

3D Printed Voronoi Structures Inspired by Paracentrotus lividus Shells

3D Printed Voronoi Structures Inspired by Paracentrotus lividus Shells

Buckling Analysis for Carbon and Glass Fibre Reinforced Hybrid Composite Stiffened Panels

Dynamic Analysis of Hexagon Honeycomb Sandwich Plate Resting on Elastic Foundations

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