Experimental and numerical studies on the quasi-static and dynamic crushing responses of multi-layer trapezoidal aluminum corrugated sandwiches

Kılıçaslan, Cenk; Güden, Mustafa; Odacı, İsmet Kutlay; Taşdemirci, Alper

doi:10.1016/j.tws.2014.01.017

Cited by 67 publications

(34 citation statements)

References 36 publications

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“…Same is valid for the cylindrical portion. Kılıçaslan et al [8] were reported similar results for a confined corrugated core sandwich structure; which was also a progressively collapsing structure. In their study, as a result of confining, buckling and post buckling stresses increased.…”

Section: Experimental and Numericalmentioning

confidence: 67%

See 1 more Smart Citation

Dynamic crushing and energy absorption of sandwich structures with combined geometry shell cores

Taşdemirci

Kara

Turan

et al. 2015

Thin-Walled Structures

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a b s t r a c tDynamic crushing and energy absorption characteristics of sandwich structures with combined geometry shell cores were investigated experimentally and numerically. The effect of strain rate on the crushing behavior was presented by the crushing tests at quasi-static, intermediate and high strain rate regimes. It was shown that absorbed energy increased with increasing impact velocity. The effect of confinement on crushing behavior was shown by conducting confined experiments at quasi-static and dynamic rates. Higher buckling loads at lower deformation were observed in confined quasi-static crushing due to additional lateral support and friction provided by confinement wall. By using fictitious numerical models with strain rate insensitive material models, the effect of inertia and strain rate on crushing were shown. It was observed that, increase in impact velocity caused increase in inertial effects and strain rate effects were nearly independent from the impact velocity. The effects of multilayering were also investigated numerically.

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Section: Experimental and Numericalmentioning

confidence: 67%

“…Competitors such as corrugated structures [8][9][10][11] were also proposed having controllable macro structures in complex shapes by providing energy absorption comparable with foam-like behavior. Metallic honeycombs are also used as core material in sandwich panels [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Dynamic crushing and energy absorption of sandwich structures with combined geometry shell cores

Taşdemirci

Kara

Turan

et al. 2015

Thin-Walled Structures

View full text Add to dashboard Cite

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“…The static and dynamic friction coefficients were set sequentially to 0.3 and 0.2 in all contact definitions. These values of friction coefficients were also previously applied and shown to yield the numerical results well agreed with the experiments . The numerical stresses on the incident bar were calculated at the same locations with the strain gages in the experimental set‐up.…”

Section: Numerical Modelsmentioning

confidence: 68%

“…The aim of the present study was to investigate the effect of the insertion of imperfect layers on the shock mode of deformation of a multilayer 1050 H14 aluminium corrugated sandwich core. The investigated sandwich core was made of corrugated fin layers and previously shown to exhibit repeatable responses to mechanical forces under compression at low and high velocities . The quasi‐static compression tests were performed at 0.0048 m/s, and the impact tests (Taylor‐like impact) were performed at 135, 150, and 200 m/s.…”

Section: Introductionmentioning

confidence: 99%

Impact loading and modelling a multilayer aluminium corrugated/fin core: The effect of the insertion of imperfect fin layers

Sarıkaya

Taşdemirci

Güden

2019

Strain

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The quasi‐static compression (0.0048 m/s) and Taylor‐like impact (135, 150, and 200 m/s) loading of a multilayer 1050 H14 aluminium corrugated core were investigated both experimentally and numerically in LS‐DYNA using the perfect and imperfect sample models. In the imperfect sample models, one or two layers of corrugated fin structure were replaced by the fin layers made of bent‐type cell walls. The localised deformation in the quasi‐static imperfect models of cylindrical sample started at the imperfect layers, the same as the tests, and the layers were compressed until about the densification strain in a step‐wise fashion. The localised deformation in the perfect models, however, started at the layers at and near the top and bottom of the test sample. In the shock mode, the sample crushed sequentially starting at the impact end layer regardless the perfect or imperfect sample models were used. Furthermore, the perfect and imperfect models resulted in nearly the same initial crushing stresses in the shock mode. The layer strain histories revealed a velocity‐dependent layer densification strain. Both model types, the imperfect and perfect, well approximated the stress‐time histories and layer deformations of the shock mode. The rigid perfectly plastic locking model based on the numerically determined densification strains also showed well agreements with the experimental and numerical plateau stresses of the shock mode.

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“…Figure 5 shows trapezoidal corrugated-cores that have trapezium in shape with the angle. Kiliçaslan et al [33] do numerical studies and experimental on the quasi-static and dynamic crushing responses of multilayer trapezoidal aluminum corrugated sandwiches. …”

Section: Trapezoidalmentioning

confidence: 99%

Sandwich Structure Based On Corrugated-Core: A Review

2016

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Abstract. Sandwich structures are commonly based on polymeric foam and honeycomb core material, for use in lightweight applications such as fuselage in aero plane, hull in marine construction and others. A review of sandwich structure based on corrugated-core is proposed and presented in this paper. Firstly, this paper aims to provide a means of comparing available sandwich structure in industries. Secondly, this paper aims to provide sandwich structure with corrugated-core for future research development efforts in field of sandwich construction. This paper starts with introduction of composite material such as sandwich structure, the advantages of sandwich structure was shown. After that these papers provide the structure of sandwich structure which includes the two faces and the cores. Furthermore, sandwich structure with different cores, which is honeycomb, foam core and corrugated core are discussed. At the end, the paper discussed more on corrugated-core for future research development.

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Experimental and numerical studies on the quasi-static and dynamic crushing responses of multi-layer trapezoidal aluminum corrugated sandwiches

Cited by 67 publications

References 36 publications

Dynamic crushing and energy absorption of sandwich structures with combined geometry shell cores

Dynamic crushing and energy absorption of sandwich structures with combined geometry shell cores

Impact loading and modelling a multilayer aluminium corrugated/fin core: The effect of the insertion of imperfect fin layers

Sandwich Structure Based On Corrugated-Core: A Review

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