Theoretical design and analysis of a honeycomb panel sandwich structure loaded in pure bending

Galletti, Gaetano G.; Vinquist, C.; Es‐Said, O.S.

doi:10.1016/j.engfailanal.2007.04.004

Cited by 40 publications

(19 citation statements)

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“…The theoretical model for predicting indentation failure loads of foam-core sandwich beams at horizontal orientation have been studied by several researchers [31][32][33][34][35]. However, there is a lack of research for estimating indentation failure loads at vertical orientation.…”

Section: Indentation Failurementioning

confidence: 99%

Effect of beam orientation on the static behaviour of phenolic core sandwich composites with different shear span-to-depth ratios

Ferdous

Manalo

Aravinthan

2017

Composite Structures

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Please cite this article as: Ferdous, W., Manalo, A., Aravinthan, T., Effect of beam orientation on the static behaviour of phenolic core sandwich composites with different shear span-to-depth ratios, Composite Structures (2017), doi: http://dx. AbstractThis study thoroughly investigated the flexural behaviour of phenolic cored sandwich beams with glass fibre composite skins in the horizontal and vertical positions. The beams have a shear span-to-depth ratio (a/d) varying between 0.5 and 12, and tested under 4-point static bending. Their failure load are then predicted theoretically. The results showed that changing the beam orientation from horizontal to vertical changes the failure mode from brittle to progressive. The sandwich beam's high bending stiffness can be efficiently utilised by placing them vertically. The a/d ratio played a major role on the load capacity and failure mode. In both orientations, the load capacity decreased with the increased of a/d. The beam failed in shear, a combined shear and bending, and bending for a/d ≤ 2, 2 < a/d < 6, and a/d ≥ 6, respectively. These failure mechanisms can be correlated to the shear-to-bending stress ratio while the failure load can be reasonably predicted using the available theoretical models.The two-way analysis of variance showed that the beam orientation is a more influential parameter than the a/d ratio. From this study, the horizontal beams are preferable for flexural dominated structures while the vertical beams are desirable for shear dominated structures.

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Section: Indentation Failurementioning

confidence: 99%

Effect of beam orientation on the static behaviour of phenolic core sandwich composites with different shear span-to-depth ratios

Ferdous

Manalo

Aravinthan

2017

Composite Structures

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“…Due to the significant differences between the mechanical properties and the water resistance of binderless hemp Shive composite and bidirectional hemp tissue composite, it is best to use the sandwich form. The sandwich concept is usually used to protect a thick, weak core layer with two thin, high-resistant layers to modify the mechanical properties of the whole structure (stiffness and strength to weight ratio) [20] [21].…”

Section: Introductionmentioning

confidence: 99%

Proposal of Sandwich Composite from Bioresource and Polystyrene Waste Materials

ALmusawi¹,

Lachat²,

Chamoret³

et al. 2018

IJET

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Lately there is a renewed interest in the use of bio-resource materials for the production of ecological, sustainable and inexpensive building materials. Sandwich composite of minimum plastic matrix was manufactured, this was achieved by using the Thermoforming process in two steps. In the first step, the core layer was made when thermo pressed 100% hemp Shive particles under a high pressure. The second step was accomplished by wrapping the core layer with two thermoplastic composite layers of 60% of hemp tissue and 40% recycled Polystyrene. Interestingly, through the first step, elevated temperature treated the core surface (hydrophilic) and gave it greater adherence to the Polystyrene matrix (hydrophobic). Mechanical properties of this proposed sandwich composite of 80 % bio-resource were approximately four times of the Polystyrene resistance. Furthermore, the microscopic study was performed to investigate the bonding of the different components, especially for the binderless core layer. Each individual layer and the sandwich form were mechanically investigated, and the finite element method, via ANSYS, was used to illustrate the stresses in the sandwich structure.

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“…Face sheets play a dominant role in protecting the honeycomb core from different mechanical loading. Under flexural loading, the face sheets carry compressive and tensile stress (Meraghni et al 1999;Galletti et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Polyester Pinning Effect on Flexural and Vibrational Characteristics of Foam Filled Honeycomb Sandwich Panels

Jayaram¹,

Nagarajan²,

Kumar³

2017

Lat. Am. j. solids struct.

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Polyester pins are incorporated in polyurethane foam filled honeycomb core sandwich panel to increase the interfacial strength between the faces and core in order to improve the performance of sandwich structures. Foam filled Honeycomb Sandwich panel (FHS) and Pin incorporated Foam filled Honeycomb sandwich panels (PFHS) were developed. The developed sandwich panels are tested for flexural and vibration characteristics. The influence of strain rates on flexural behaviour of sandwich panels were also evaluated. The material used for face sheets and pins are same, ends of pin act as chemically cross linked polyester joint at the interfaces of faces and core in addition to the adhesive area. This modification had effectually increased the interfacial strength thereby increased the flexural and damping properties of panels significantly. Moreover, increasing the pin diameter has a larger effect, whereas, the strain rate had a moderate influence on the failure load of both types of sandwich panels. The investigation brings to light a novel pin incorporated foam filled honeycomb sandwich panels that can be used for various applications.

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Theoretical design and analysis of a honeycomb panel sandwich structure loaded in pure bending

Cited by 40 publications

References 0 publications

Effect of beam orientation on the static behaviour of phenolic core sandwich composites with different shear span-to-depth ratios

Effect of beam orientation on the static behaviour of phenolic core sandwich composites with different shear span-to-depth ratios

Proposal of Sandwich Composite from Bioresource and Polystyrene Waste Materials

Polyester Pinning Effect on Flexural and Vibrational Characteristics of Foam Filled Honeycomb Sandwich Panels

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