Compression after impact behavior of titanium honeycomb sandwich structures

Zhao, Wei; Xie, Zhihui; Li, Xiang; Yue, Xishan; Sun, Junfeng

doi:10.1177/1099636217707150

Cited by 11 publications

(5 citation statements)

References 18 publications

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“…In recent years, titanium honeycomb sandwich structures have been gradually applied in the fuselage, wings, and thermal protection systems of some newly developed aircraft in China [1][2][3][4]. Compared to traditional aerospace sandwich structures, titanium honeycomb sandwich structures have superior strength, stiffness, sound insulation, thermal and corrosion resistance [5].…”

Section: Introductionmentioning

confidence: 99%

Structural behaviors of edge-closed titanium honeycomb sandwich panels with a repaired penetrating damage under a unidirectional tensile load

Liu,

Zhu

et al. 2023

AETR

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This paper deals with penetrating damage experimental and numerical investigation on edge-closed titanium honeycomb sandwich panels under uniaxial tension. Three damage state specimens were designed and manufactured for tests including intact, prefabricated penetrating damage, and repaired. The test results show the diameter of penetrating hole has a great impact on failure mode and load, and the failure mode of repaired specimens is consistent with the intact. A parametric numerical methodology containing structural damage details was established. Numerical analysis successfully simulated the failure process of all damage states, which was consistent with the experimental observations. Scarf and inlay repair technique can be used to restore the mechanical properties of edge-closed titanium honeycomb sandwich panels.

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Section: Introductionmentioning

confidence: 99%

Structural behaviors of edge-closed titanium honeycomb sandwich panels with a repaired penetrating damage under a unidirectional tensile load

Liu,

Zhu

et al. 2023

AETR

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“…Several studies have been carried out to investigate the compressive strength of HSP after low velocity impact. The types of damages occurring during low velocity impacts are also documented [5–7]. A. Bonannoa et al used cheap and light aluminum honeycomb core (AA3003 alloy) for static indentation and considered aluminum honeycomb as a design solution for earth moving machines [8].…”

Section: Introductionmentioning

confidence: 99%

Residual compressive strength of aluminum alloy honeycomb sandwich panel in the presence of multiple impact dents

Tariq

Uzair

Shifa

2021

Jnl of Sandwich Structures & Materials

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The present article discusses the effect of impact damage on residual compressive strength of aluminum alloy honeycomb sandwich panel (HSP). Multiple dents were created in HSP by penetrating indenters of different diameters through quasi-static indentation technique. The damaged samples were compressed edge-wise for determination of in-plane compression after impact (CAI) strength. The failed samples were macroscopically examined to reveal the underlying damage mode. Experimental results showed that the presence of multiple dents of 5 mm size or less do not appreciably affect the CAI strength of aluminum alloy HSP. However, moderate reduction in CAI strength was observed in case of multiple dents of 10 mm. Compressive strength was reduced by 18% in presence of four dents of 10 mm diameter. The maximum reduction in CAI strength of up to 30% was observed in samples impact damaged by 15 mm indenter. Examination of failed HSP showed that the maximum load was sustained taken by aluminum facesheet whereas the contribution of honeycomb core was insignificant. Research findings exhibit that the CAI strength of aluminum alloy honeycomb structure is not sensitive to impact damages size less than 5 mm diameter however dents above 5 mm size can seriously impair mechanical performance and structural integrity.

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“…Mechanical behaviour such as elastic response and fracture strength at a small strain under quasi-static loadings were well investigated for the honeycomb core for structural applications. 3 In addition to only elastic and fracture models of the out-of-plane and in-plane crushing, [4][5][6] transverse shearing models were also well established. 7 For the case of a larger strain, theoretical, experimental and numerical studies were also reported.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on the compressive behaviour of an aluminium honeycomb core

Mertani¹,

Keskes²,

Tarfaoui³

2019

Mater. Tehnol.

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In this research, a hexagonal honeycomb core under a compressional load is studied numerically from the initial elastic regime to the fully crushed state using the Abaqus finite-element modelling. Two modelling approaches, i.e., a static analysis and an explicit non-linear analysis are applied to a 3D model of an aluminium honeycomb core. This honeycomb structure is compressed quasi statically using rigid plates and displacement control. Moreover, the crushing of the honeycomb-core structure and the failure due to buckling are verified numerically, and a study is also performed to show how different densities, cell sizes and specimen sizes can affect the average crush force and plateau force. A comparison between experimental and numerical results is drawn, showing that the numerical models can effectively predict the mean crushing force and mechanical behaviour with a good accuracy.Avtorji so raziskovali obna{anje jedra heksagonalnega satovja pod tla~no obremenitvijo. Numeri~na {tudija, izvedena s pomo~jo metode kon~nih elementov na programskem orodju Abaqus, je potekala od za~etnega elasti~nega re`ima do popolne poru{itve strukture. Uporabili so dva pristopa k modeliranju, to je: stati~no analizo in eksplicitno nelinearno analizo 3D modela jedra satovja iz izbrane Al zlitine (AlMg3). Izbrana struktura v obliki satovja je bila kvazi-stati~no tla~no obremenjena z uporabo togih plo{~v re`imu kontrole pomika. Nadalje so avtorji numeri~no verificirali poru{itev strukture zaradi njene deformacije. Numeri~na {tudija je tudi pokazala, kako razlike v gostoti, velikosti celic in velikosti same strukture vplivajo na povpre~no in maksimalno obremenitev, ki sta potrebni za njeno poru{itev. Izvedli so primerjavo med eksperimentalno dobljenimi rezultati in rezultati numeri~nih simulacij. Izkazalo se je, da se dobljeni rezultati med seboj dobro ujemajo ter da lahko numeri~ni model dokaj natan~no napove povpre~no obremenitev, potrebno za poru{itev dane strukture. Klju~ne besede: sendvi~struktura, jedro satovja iz Al zlitine, tla~na obremenitev, deformacije, poru{itev, numeri~na analiza na osnovi metode kon~nih elementov UDK 620.1:669.715:620.173

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Compression after impact behavior of titanium honeycomb sandwich structures

Cited by 11 publications

References 18 publications

Structural behaviors of edge-closed titanium honeycomb sandwich panels with a repaired penetrating damage under a unidirectional tensile load

Structural behaviors of edge-closed titanium honeycomb sandwich panels with a repaired penetrating damage under a unidirectional tensile load

Residual compressive strength of aluminum alloy honeycomb sandwich panel in the presence of multiple impact dents

Numerical study on the compressive behaviour of an aluminium honeycomb core

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