A numerical study on the impact behavior of foam-cored cylindrical sandwich shells subjected to normal/oblique impact

Su, Buyun; Zhou, Zhiwei; Zhang, Jianjun; Wang, Zhi Hua; Shu, Xuefeng; Liu, Zhiqiang

doi:10.1590/1679-78251742

Cited by 23 publications

(6 citation statements)

References 29 publications

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“…Many works have been performed to study the rate effect in the mechanical behavior of the metallic foams, such as the uniaxial failure stress, the plateau stress, the densification behavior and the energy absorption capacity (Zhao,1997;Deshpande and Fleck, 2000b;Demiray et al, 2006;Yu et al, 2006;Zhou et al, 2012aZhou et al, , 2012bZhou et al, , 2014Castroa et al, 2013;Alia et al, 2014;Goel et al, 2014;Wang et al, 2014;Kishimoto et al, 2014;Caprino et al, 2015;Storm et al, 2015;Su et al, 2015). Nevertheless, little literature has involved the experimental failure surface, especially the dynamic failure surface which is very important for the engineering applications of the metallic foams.…”

Section: Determination Of Dynamic Failure Surfacementioning

confidence: 99%

Impact Response of Aluminium Alloy Foams Under Complex Stress States

Zhou

Wang

et al. 2016

Lat. Am. j. solids struct.

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A series of dynamic tests were conducted on a closed-cell aluminum alloy foams in order to determine experimental failure surface under impact loading conditions. Quasi-static tests have also been performed to investigate failure mechanism under different stress paths. Three typical types of deformation modes can be observed, which corresponds to the different failure mechanism. The failure loci of the foam in principal stress plane are explored from quasistatic to dynamic loading conditions. A significant strength enhancement is identified experimentally. The expansion of the failure locus from the quasi-static to the dynamic test is almost isotropic. A modified failure criterion for the metallic foam is proposed to predict failure locus as a function of strain rate. This rate-dependence failure criterion is capable of giving a good description of the biaxial failure stresses over a wide range of the strain rates.

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Section: Determination Of Dynamic Failure Surfacementioning

confidence: 99%

Impact Response of Aluminium Alloy Foams Under Complex Stress States

Zhou

Wang

et al. 2016

Lat. Am. j. solids struct.

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“…Su et al. [13] numerically studied the behavior of sandwich panels with aluminum face-sheet and aluminum foam core under high-velocity impact. The parameters such as projectile diameter and nose, curvature and thickness of face-sheet under normal and oblique impact were studied.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the high-velocity impact behavior of sandwich structures with an emphasis on the layering effects of foam core

Abbasi

Nia

Abolfathi

2018

Jnl of Sandwich Structures & Materials

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In this study, the effects of the core layering of sandwich structures, as well as arrangements of these layers on the ballistic resistance of the structures under high-velocity impact, were investigated. Sandwich structures consist of aluminum face-sheets (AL-1050) and polyurethane foam core with different densities. Three sandwich structures with a single-layer core of different core densities and four sandwich structures with a four-layer core of different layers arrangements were constructed. Cylindrical steel projectiles with hemispherical nose, 8 mm diameter and 20 mm length were used. The projectile impact velocity range was chosen from 180 to 320 m/s. Considering constant mass and total thickness for the core, the results of the study showed that the core layering increases the ballistic limit velocity of the sandwich structures. The ballistic limit velocity of the panels with a four-layer core of different arrangements, compared to the panel with the single-layer core, is higher from 5% to 8%. Also, for the single-layer core structure, by increasing the core density, the ballistic limit velocity was increased. Different failure mechanisms such as plugging, petaling and dishing occurred for the back face-sheet. The dishing area diameter of back face-sheets was proportional to the ballistic resistance of each sandwich structure.

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“…Ghalami-Choobar and Sadighi 16 studied numerically and experimentally effects of projectile velocity, core density, core thickness, face-sheet thickness and orientation of fibers on the ballistic behavior and energy absorption of foam core sandwich structures with aluminum and composite face-sheets. Su et al 17 studied the high-velocity impact of projectiles with cylindrical sandwich plates, and investigated the effect of parameters such as speed and angle of impact of the projectile, the diameter and shape of the projectile nose and face-sheet thickness on the ballistic behavior and energy absorption of the targets.…”

Section: Introductionmentioning

confidence: 99%

“…Su et al. 17 studied the high-velocity impact of projectiles with cylindrical sandwich plates, and investigated the effect of parameters such as speed and angle of impact of the projectile, the diameter and shape of the projectile nose and face-sheet thickness on the ballistic behavior and energy absorption of the targets.…”

Section: Introductionmentioning

confidence: 99%

Analytical and numerical investigations on the penetration of rigid projectiles into the foam core sandwich panels with aluminum face-sheets

Nia

Kazemi

2017

Proceedings of the Institution of Mechanical Engineers, Part G:

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The aim of this study was to evaluate the penetration of ballistic projectiles into the sandwich panels both analytically and numerically. Due to the complexity of the mathematical equations governing this phenomenon, very few analytical studies have been conducted in this area. Given the widespread use of sandwich panels consisting of metal facesheets and metal foam core in aerospace industries, revisions are carried out on analytical method provided by Hoo Fatt et al. on polymer foam core and composite face-sheets sandwich panels. Then using the improved relations, the high speed impact of a cylindrical projectile on the sandwich panels with aluminum face-sheets and aluminum foam core with different density ratios has been discussed. Also, the penetration process is simulated and finally to evaluate the accuracy of the improved analytical method and simulations, the results are compared to the experimental data obtained from tests have been done on the panels with aluminum foam core and aluminum face-sheets. Results of the research show that the improved procedure and numerical simulations are in good agreement with the experiments.

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A numerical study on the impact behavior of foam-cored cylindrical sandwich shells subjected to normal/oblique impact

Cited by 23 publications

References 29 publications

Impact Response of Aluminium Alloy Foams Under Complex Stress States

Impact Response of Aluminium Alloy Foams Under Complex Stress States

Experimental study on the high-velocity impact behavior of sandwich structures with an emphasis on the layering effects of foam core

Analytical and numerical investigations on the penetration of rigid projectiles into the foam core sandwich panels with aluminum face-sheets

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