Benchmark solutions and assessment of variable kinematics models for global and local buckling of sandwich struts

D′Ottavio, Michele; Polit, O.; Ji, Wooseok; Waas, Anthony M.

doi:10.1016/j.compstruct.2016.01.019

Cited by 37 publications

(16 citation statements)

References 53 publications

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“…Exact solutions for global and local buckling of sandwich struts were derived referring to elasticity solutions ( Ji & Waas,20 07;20 08 ). D'Ottavio andPolit (2015) andD'Ottavio, Polit, Ji, andWaas (2016) obtained quasi-3D solutions for global buckling and wrinkling of uniaxially loaded orthotropic sandwich panels and struts by means of Naviertype solutions and high-order models formulated within a variable-kinematics approach. Two-dimensional structural models were considered by Rose, Moore, Knight, and Rankin (2002) , where 2D sandwich elements were implemented in the finite element code STAGS and complemented with a strip-based feature for local buckling analysis.…”

Section: Introductionmentioning

confidence: 99%

Buckling and wrinkling of anisotropic sandwich plates

Vescovini

D′Ottavio

Dozio

et al. 2018

International Journal of Engineering Science

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Section: Introductionmentioning

confidence: 99%

Buckling and wrinkling of anisotropic sandwich plates

Vescovini

D′Ottavio

Dozio

et al. 2018

International Journal of Engineering Science

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“…The governing buckling differential equation may be obtained based on the either beam or elasticity [9][10][11] theories. The beam theories allow to solve much more complex problems for a beam or a system of beams.…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis of Rectangular Beams Having Ceramic Liners at Its Top and Bottom Surfaces with the help of the Exact Transfer Matrix

Yıldırım

2021

International Journal of Engineering and Applied Sciences

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In this study the elastic buckling behavior of beams with rectangular cross section is studied analytically. It is assumed that both the top and bottom surfaces of the beam are ceramic coated. The aluminum (Al) is chosen as a core material while the aluminum-oxide (Al 2 O 3 ) is preferred as a liner (face) material. The transfer matrix method based on the Euler-Bernoulli beam theory is employed in the analysis. The exact transfer matrix in terms of equivalent bending stiffness is presented together with the exact buckling equations for hinged-hinged, clampedhinged, clamped-free, and finally clamped-clamped boundary conditions. After verifying the results for beams without liners, dimensionless buckling loads of the beam with ceramic liners are numerically computed for each boundary condition. The effect of the thickness of the ceramic liner on the buckling loads is also investigated. It is found that a ceramic liner enhances noticeably the buckling loads. As an additional study those effects are also examined for the ratios of elasticity modulus of face material to core material in a wide range.

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“…In a very related article, the problem of delamination buckling has been addressed, emphasizing growth of the buckling load that leads to panel failure. Ji et al 14,15 studied the buckling of a composite sandwich beam, panel, and strut using a planar classical elasticity method. Moreover, the progressive failure of a monolithic composite panel having an initial delamination were carried out considering both interactive out-of-plane and in-plane failure modes.…”

Section: Introductionmentioning

confidence: 99%

Failure study of fiber/epoxy composite laminate interface using cohesive multiscale model

Moheimani

Sarayloo

Dalir

2020

Advanced Composites Letters

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In this study, finite element modeling is performed to investigate the compressive failure of the composite sandwich structures with layered composite shells. An embedded debond area between the layered composite shell and the foam core is assumed as a defect. The composite shells are several plies of equal thickness Kevlar, carbon fiber composite, and E-glass composite with epoxy resin. Three different lay-ups, namely, (0°/90°/0°/90°/0°/90°), (45°/−45°/0°/90°/60°/−30°), and (60°/−30°/90°/0°/30°/90°) are considered for symmetric and asymmetric sequences. The work focuses on the importance of cohesive zone model versus the previously conducted numerical simulation and experimental results for buckling of sandwich composite structures. This enables one to account for delamination growth between shells and core and improve the correlation results with those of experiments. It has been shown that not only the cohesive model is capable of demonstrating delamination propagation, but it also correlates very well with the experimental data. By compiling user-defined cohesive mesoscale model in Abaqus simulation, the local and global buckling of the face-sheets can be precisely detected and response of sandwich structure becomes mesh independent, while mesh size is reduced.

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Benchmark solutions and assessment of variable kinematics models for global and local buckling of sandwich struts

Abstract: International audienceno abstrac

Cited by 37 publications

References 53 publications

Buckling and wrinkling of anisotropic sandwich plates

Buckling and wrinkling of anisotropic sandwich plates

Buckling Analysis of Rectangular Beams Having Ceramic Liners at Its Top and Bottom Surfaces with the help of the Exact Transfer Matrix

Failure study of fiber/epoxy composite laminate interface using cohesive multiscale model

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