A study on composite honeycomb sandwich panel structure

He, Meifeng; Hu, Wenbin

doi:10.1016/j.matdes.2007.03.003

Cited by 141 publications

(67 citation statements)

References 9 publications

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“…The honeycomb plate is a common lightweight, high-strength composite material structure [1][2][3][4][5]. This structure has been widely used in aviation [6], and architecture applications and has played an important role in earthquake, flood and other natural disaster emergency projects, such as emergency bridge construction and improvised buildings for disaster victims and the military.…”

Section: Introductionmentioning

confidence: 99%

The influence of processing holes on the flexural properties of biomimetic integrated honeycomb plates

et al. 2015

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In this study, the flexural properties of fully integrated honeycomb plates (FIHPs) were analyzed using experimental methods and finite element analyses. The effects of the perforated surface on the flexural properties of FIHPs were investigated by analyzing the flexural failure patterns and load-deformation curves of the FIHPs. The direction of the perforated surface has a significant influence on the flexural strength, and the structure exhibits different destruction patterns depending on the orientation. The experimental results indicate that although destruction occurs in the lower skin regardless of whether the perforated surface is up or down, the strength of the material of FIHPs can be optimized if the perforated surface faces upward because the chopped basalt fiber-reinforced epoxy resin composite material is strong in compression and weak in tension. A submodel of a thin honeycomb plate containing holes was developed to discuss these issues in detail. The analysis results suggest that the stress concentration around the hole is distinct and that cracks initially appear in this high-stress area. This paper provides some conclusions to support the better use of biological structures, and it offers some important theoretical support for the application of FIHPs in natural disaster emergency projects.

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Section: Introductionmentioning

confidence: 99%

The influence of processing holes on the flexural properties of biomimetic integrated honeycomb plates

et al. 2015

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“…It should be noted that flexural rigidity of the core (the second term in Eq. (4)), generally left out in the stiffness calculation of the sandwich beams containing relatively low modulus core [9][10][11][12][13][14][15][16][17][18][19], must be included for the calculation of (EI) eq for this type of sandwich panel. Without a contribution of the core flexural rigidity, the agreement between the calculated and measured values of beam's stiffness are clearly worsen especially for oil palm wood core at relatively high density (Fig.…”

Section: Sandwich Beam Stiffnessmentioning

confidence: 99%

“…In practice, the optimum face and core thickness are therefore needed to achieve the required stiffness and strength. Linear elastic beam theory has been employed to predict stiffness and strength of the sandwich beam [9][10][11][12][13][14][15][16][17]. In addition, a failure mode map of sandwich beams consisting of various faces and core materials have also been developed [10,18,19].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, a failure mode map of sandwich beams consisting of various faces and core materials have also been developed [10,18,19]. However, those calculations have usually been designed for the sandwich beam containing strong and stiff faces with a much softer and weaker core in which some properties of core materials have been omitted [9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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Stiffness and strength of oil palm wood core sandwich panel under center point bending

2015

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“…Sandwich structures generally consist of face sheets (skins) made of fibres which sandwiches the lightweight core material in the middle. In a sandwich structures, the strong and stiff skins carry most of the in-plane and bending loads while the core mainly bears the transverse shear and normal loads [1].…”

Section: Introductionmentioning

confidence: 99%

Behaviour of fibre composite sandwich structures under short and asymmetrical beam shear tests

Ferdous

2013

Composite Structures

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The behaviour of structural fibre composite sandwich beams made up of glass fibre composite skins and phenolic core material was investigated under three-point short beam and asymmetrical beam shear tests. The effect of the shear span-to-depth ratio (a/D) on the strength and failure behaviour of the composite sandwich beams was examined. The results showed that with increasing a/D ratio, the failure load of the sandwich beam is decreasing. On the contrary, the coupling effect of flexural stresses increases with increasing a/D ratio.Noticeably, the fibre composite sandwich beams tested under asymmetrical beam shear exhibited higher failure load compared to beams tested under short beam shear. Analysis showed that the shear stress in the core is more dominant than flexural stress when the a/D ratio is 1 for the sandwich beams under short beam test and 1 to 3 for the sandwich beams tested under asymmetrical beams shear test. The proposed prediction equation which accounts for the combined effect of shear and flexural stresses due to the changing a/D ratio, presented a good agreement with the experimental results, showing that it can reasonably estimate the failure load of structural fibre composite sandwich beams.

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A study on composite honeycomb sandwich panel structure

Cited by 141 publications

References 9 publications

The influence of processing holes on the flexural properties of biomimetic integrated honeycomb plates

The influence of processing holes on the flexural properties of biomimetic integrated honeycomb plates

Stiffness and strength of oil palm wood core sandwich panel under center point bending

Behaviour of fibre composite sandwich structures under short and asymmetrical beam shear tests

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