Impact response of aluminum foam core sandwich structures

Mohan, K. Saravana Raja; Yip, T.H.; Idapalapati, Sridhar; Chen, Zhong

doi:10.1016/j.msea.2011.08.066

Cited by 89 publications

(31 citation statements)

References 23 publications

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“…It was found that the composite armors with aluminum foam cores perform better than the ones without foam cores under ballistic loadings [9][10][11]. The effects of several key parameters on the ballistic limit and perforation energy of the aluminum foamcored sandwich panels (AFPs) have been analyzed through experiments [12,13]. All these works have shown that the AFP has a good performance in the ballistic resistance.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

Yang

Dong

et al. 2013

Advances in Mechanical Engineering

121

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An innovative auxetic-cored sandwich panel (AXP) is proposed. Its perforation resistant performance under high-velocity projectile impact was numerically analyzed using the validated finite element simulation techniques and compared with that of the aluminum foam-cored sandwich panel (AFP) of identical dimensions and weight. It has been found that the AXP is far superior to the AFP in ballistic resistance because of the material concentration at the impacted area due to the negative Poisson's ratio (NPR) effect. A parametric study was carried out to investigate the effects of several key parameters, including impact velocity, face and core thicknesses, and core density, on the ballistic resistance of the AXP and AFP. The results show that the ballistic limit and perforation energy of the AXP is greatly affected by these parameters. Meanwhile, the advantages of AXP over AFP being used as ballistic resistant structures are highlighted. The primary outcome of this research is new information on the development and design of advanced ballistic resistant structures containing auxetic materials.

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Section: Introductionmentioning

confidence: 99%

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

Yang

Dong

et al. 2013

Advances in Mechanical Engineering

121

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“…Hanssen et al (2006) simulated the bird strike on sandwich panels with aluminium foam core and sheets and compared the results with the experimental measurements. Mohan et al (2011) analyzed the impact response of foam with different face sheets and compared the initiating failure mechanisms of them. Buitrago et al (2010) and Ivañez et al (2011) investigated the dynamic response and energy absorption of composite sandwich panels with honeycomb/foam core under high-velocity impact.…”

Section: Latin American Journal Of Solids and Structures 12 (2015) 20mentioning

confidence: 99%

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

Zhou

Zhang

et al. 2015

Lat. Am. j. solids struct.

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Finite element analysis was used to investigate the impact behavior of the foam-cored sandwich shells under the ballistic impact. The ballistic limit, failure mode of the face-sheet and energy absorption of the uniform/graded core were discussed in this paper. Based on the impact phase diagrams, the effects of several factors (i.e. projectile shape and diameter, face-sheet curvature and thickness) on the normal/oblique impact behavior were analyzed in detail. Results indicate that blunter and larger projectiles, higher impact velocity and thicker facesheets can significantly raise the impact-resistance performance of the targets. In addition, the behavior of ballistic impact becomes more complex as the result of the increasing oblique angle. KeywordsCylindrical sandwich shells; aluminium foam; oblique impact; impact phase diagram; numerical simulation.

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“…Another popular type of core used for manufacturing sandwich panels is metallic foam. Mohan et al [14] experimentally investigated the response of bare aluminium foam blocks and their sandwich panels with various tailored facesheets under a drop-weight impact loading; the results showed increase in foam thickness and the use of facesheet enhanced the impact energy absorption capacity. Rajaneesh et al [15] compared the relative performance of sandwich plates consisting of aluminium alloy foam and PVC foam with aluminium facesheets under low velocity impact, and it was found that the contact radius was higher for a sandwich plate with a stronger foam for a given impact load.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the medium velocity impact response of sandwich panels with different cores

2016

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The impact response of sandwich panels is not only dependent on the facesheet but also on the core material. This paper compares the dynamic response of sandwich panels with different core materials when subjected to medium velocity impacts. The sandwich panels were made of aluminium facesheets with five different cores, viz., low density balsa wood, high density balsa wood, cork, polypropylene honeycomb, and polystyrene foam. All the specimens were impacted by an instrumented projectile with a hemispherical steel head at three impact energies of 43, 85 and 120 J. An accelerometer attached to the projectile and a high speed camera were used to collect data and record the impact process. 3D scanning technique was used to measure the deformation of front and back faces after impact. The impact properties of the sandwich panels with the five different cores were compared in terms of contact force, energy absorption, depth of indentation, overall bending deflection, etc. Post-mortem sectioning was conducted to examine the impact induced failures such as facesheet rupture, crush of core material, and debonding between facesheet and core. Finite element modelling was also carried out to elucidate the observed experimental results and further understand the effect of core material.

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Impact response of aluminum foam core sandwich structures

Cited by 89 publications

References 23 publications

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

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

Experimental study of the medium velocity impact response of sandwich panels with different cores

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