Quasi-static crush behavior of aluminum honeycomb specimens under compression dominant combined loads

Hong, Sung Tae; Pan, Jwo; Tyan, Tau; Prasad, Priya

doi:10.1016/j.ijplas.2005.02.002

Cited by 96 publications

(58 citation statements)

References 38 publications

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“…In this region the crushing and fracture of the cores start ( Figure 5). Depending on the core densification at the end of Region 3, an increase in the compressive stress is observed, as was reported in [16][17][18][19][20][21][22][23][24] .…”

Section: Modeling Of the Cell Walls Of Honeycomb Compositessupporting

confidence: 69%

“…Zhou and Mayer 20 studied the shear, tearing, and compression tests over honeycomb aluminum, which showed different failure modes involved in a general crash accident. Mohr and Doyoyo, 21,22 Hong et al 23 performed multi-axial loading tests of honeycomb materials and derived the macroscopic yield functions for the honeycomb materials. Wilbert et al 24 proved that following an initial linear response, the cell walls buckle elastically.…”

Section: Introductionmentioning

confidence: 99%

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Experimental analysis and modeling of the buckling of a loaded honeycomb sandwich composite

Bentouhami¹,

Keskes²

2015

Mater. Tehnol.

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Sandwich panels have the best stiffness-to-lightness ratio, which is what makes them very useful in industrial applications. This paper is focused on a study of the buckling capacities of the core components under uniaxial compression. The critical buckling loads for various core densities and materials of honeycomb panels were experimentally and numerically investigated. The specimens under lateral loading showed three zones: zone 1 is the initial elastic state, followed by the plateau region in zone 2, while zone 3 shows a monotonically stiffening region, associated with the densification of the material. The effect of the core density and its materials on the behavior and the damage was highlighted. From the experiment it is clear that the buckling load of the specimens increases as the core density is increasing. In terms of stiffness and load at failure, the honeycomb sandwich panel had better mechanical characteristics than its components. The study also calculated the numerical buckling loads of the panels using the ABAQUS finite-element analysis program. The achieved experimental and numerical results were compared with each other. In conclusion, a good correlation between theory and experiment was found. Keywords: honeycomb sandwich panel, buckling analysis, compression, finite-element method, collapse Sendvi~ni paneli imajo najbolj{e razmerje med togostjo in maso. To jih dela primerne za industrijsko uporabo. Ta~lanek je usmerjen v {tudij zdr`ljivosti za upogibanje klju~nih komponent pri enoosni tla~ni obremenitvi. Eksperimentalno in numeri~no so bile preiskane kriti~ne upogibne obremenitve za razli~ne klju~ne gostote in material satastih plo{~. Vzorci, stransko obremenjeni, so pokazali tri podro~ja: podro~je 1 je za~etno elasti~no stanje, ki mu sledi podro~je platoja, tj. podro~je 2. Podro~je 3 prikazuje monotono upogibanje, povezano z zgo{~evanjem materiala. Ocenjen je bil vpliv klju~ne gostote in materialov glede vedenja in po{kodb. Iz preizkusov je razvidno, da z nara{~anjem klju~ne gostote nara{~a tudi odpornost proti upogibni obremenitvi vzorcev. Glede na upogibanje in obremenitev pri poru{itvi ima satasta sendvi~na plo{~a bolj{e mehanske lastnosti v primerjavi z njenimi komponentami. V {tudiji je tudi izra~unana numeri~na upogibna obremenitev panelov z analizo kon~nih elementov s programom ABAQUS. Primerjani so dobljeni eksperimentalni in numeri~ni rezultati. Dobljena je bila dobra korelacija med teorijo in eksperimentalnimi rezultati. Klju~ne besede: satasta sendvi~na plo{~a, analiza upogibanja, tla~enje, metoda kon~nih elementov, poru{itev

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Section: Modeling Of the Cell Walls Of Honeycomb Compositessupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Experimental analysis and modeling of the buckling of a loaded honeycomb sandwich composite

Bentouhami¹,

Keskes²

2015

Mater. Tehnol.

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“…Note that the honeycomb specimens employed by the above-mentioned researchers [2,12,13] have only single in-plane orientation angle and thus the shear loads were applied along single direction. Hong et al [6,7] devised two systems (so-called the independently controlled test fixture [6] and the inclined test fixture [7]) to extensively investigated the quasi-static crush behavior of aluminum honeycomb under combined shear-compression. A phenomenological yield criterion for aluminum honeycomb specimens with different in-plane orientation angles was proposed in terms of the experimental normal crush and shear strengths under different loading conditions.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the yield behavior of Nomex honeycombs under combined shear-compression

Zhou

Wang

Zhao

et al. 2012

Lat. Am. j. solids struct.

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This paper presents an experimental investigation on the yield behavior of Nomex honeycombs under combined shearcompression with regard to out-of-plane direction. Four different types of specimens were designed in order to investigate the influence of in-plane orientation angle on the yield behavior of honeycombs under combined loads. Two different failure modes of honeycomb specimens, i.e. the plastic buckling and the extension fracture of cell walls, are observed under combined shear-compression. The experimental results validate that the in-plane orientation angle has a significant influence on the developments of the experimental yield surface. The experimental yield surfaces are compared with a phenomenological yield criterion capable of accounting for anisotropic behavior. The comparative analytical results indicate the experimental yield surfaces are approximately consistent with the theoretical yield surfaces in the normal-shear stress space. These experimental results are useful to develop constitutive models of Nomex honeycombs under combined shear-compression.

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“…The true stress-strain curves of these high-density honeycomb structures exhibit no initial collapse or peak stress, typically observed at thin-walled hexagonal honeycombs [13][14] or square honeycombs [7][8] made by aluminum sheets in terms of a corrugation/stacking process and extruded maraging steel based on the DRM (Direct Reduction Method) LCA technology, respectively. After exceeding the offset yield strength, the present specimens show a stress increase due to strain hardening of the cell wall material, followed by a maximum compression stress and finally a strength decrease, as shown in Fig.…”

Section: Stress-strain Behavior At Quasi-static and Dynamic Compressimentioning

confidence: 99%

Microstructure and mechanical properties of cold extruded, cellular TRIP-matrix composite structures under quasi-static and dynamic compression

Krüger¹,

Ehinger²,

Ullrich³

et al. 2010

WIT Transactions on the Built Environment

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Novel composites based on austenitic stainless TRIP steel AISI 304 as a matrix with reinforcements of MgO partially stabilized zirconia (Mg-PSZ) were developed. The presented honeycomb materials were produced by a modified ceramic extrusion technology that is composed of mixing precursor powders with binders, paste preparation and plastic molding, finally debinding and sintering. After processing, sintered products have a global density in the range of 2.7 to 3.0 g cm -3 and a wall thickness of 260 µm. These square-celled honeycomb samples are characterized by optical and scanning electron microscopy before and after quasi-static or dynamic compressive deformation, indicating a noticeable deformation-induced martensite formation. The mechanical properties of samples with up to 10% Mg-PSZ are compared with zirconia-free samples in terms of compression tests at strain rates in the range of 10 -3 to 10 2 s -1 . The honeycomb composite materials exhibit an increased work hardening and also extraordinary high specific energy absorption per unit mass and unit volume, respectively. According to improved property-weight-ratio and excellent crashworthiness, such filigree cellular structures can be beneficial as

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Quasi-static crush behavior of aluminum honeycomb specimens under compression dominant combined loads

Cited by 96 publications

References 38 publications

Experimental analysis and modeling of the buckling of a loaded honeycomb sandwich composite

Experimental analysis and modeling of the buckling of a loaded honeycomb sandwich composite

Experimental investigation on the yield behavior of Nomex honeycombs under combined shear-compression

Microstructure and mechanical properties of cold extruded, cellular TRIP-matrix composite structures under quasi-static and dynamic compression

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