Energy absorption and failure mechanism of metallic cylindrical sandwich shells under impact loading

Jing, Lin; Xi, C.Q.; Wang, Zhi Hua; Zhao, Longmao

doi:10.1016/j.matdes.2013.05.090

Cited by 58 publications

(15 citation statements)

References 19 publications

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“…Faces are generally made of metal alloys [1], fiber reinforced composites [2] or fiber metal laminates [3] and are responsible for carrying the transverse loads or bending moments. The core of sandwich structures comprises of honeycombs [4], corrugated materials [5], polymeric/metallic foams [6,7], lattices [8] or balsa wood [9] and is responsible for absorbing the impact energy by local plastic deformation whilst still offering enough overall support to prevent high local bending strains in the facesheets. A comprehensive review of the current trends in the research and applications of sandwich structures is done by Birman and Kardomateas, [10].…”

Section: Introductionmentioning

confidence: 99%

Low velocity failure and integrity assessment of foam core sandwich panels

Mocian

Constantinescu

Sorohan

et al. 2019

Frattura Ed Integrità Strutturale

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Impact resistance and energy absorbing capability are of great interest in the design of composite sandwich structures. This paper experimentally studies damage, failure and energy absorption properties of foam core sandwich panels with aluminum and glass fiber reinforced plastic (GFRP) facesheets subjected to low velocity impact. Tests are performed using a drop weight impact tower at different impact velocities. The energy absorbing capabilities of aluminum and composite facesheet sandwich panels with PUR and PS foam core are evaluated by means of absorbed energy-time histories and by specific parameters as normalized absorbed energy, specific energy absorption, and crush force efficiency. Stiffer panels behave better at lower impact velocities, while more ductile ones do better if impact energy is increased.

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Section: Introductionmentioning

confidence: 99%

Low velocity failure and integrity assessment of foam core sandwich panels

Mocian

Constantinescu

Sorohan

et al. 2019

Frattura Ed Integrità Strutturale

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“…Relative density Generally speaking, the impact resistance of structures is beneficial to the high core energy absorption (Jing, et al, 2013;Li, et al, 2014).As depicted in Figure 8, among all three single-layer sandwich panels, back face sheet hardly absorbs energy by plastic dissipation and most of plastic dissipation happen to front face sheet and core and moreover front face sheet dissipates more energy than core. Xue and Hutchinson (2003) concluded that the energy distribution is sensitive to the mass distribution caused by the increasing of relative density.…”

Section: Latin American Journal Of Solids and Structures 13 (2016) 28mentioning

confidence: 99%

Numerical Study on the Projectile Impact Resistance of Multi-Layer Sandwich Panels with Cellular Cores

Chen¹,

Du²,

Zhang³

et al. 2016

Lat. Am. j. solids struct.

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The projectile impact resistance of sandwich panels with cellular cores with different layer numbers has been numerically investigated by perpendicular impact of rigid blunt projectile in ABAQUS/Explicit. These panels with corrugation, hexagonal honeycomb and pyramidal truss cores are impacted at velocities between 50 m/s and 202 m/s while the relative density ranges from 0.001 to 0.15 The effects of core configuration and layer number on projectile impact resistance of sandwich panels with cellular cores are studied. At low impact velocity, sandwich panels with cellular cores outperform the corresponding solid ones and non-montonicity between relative density and projectile resistance of sandwich panels is found and analyzed. Multiplying layer can reduce the maximum central deflection of back face sheet of the above three sandwich panels except pyramidal truss ones in high relative density. Hexagonal honeycomb sandwich panel is beneficial to increasing layer numbers in lowering the contact force and prolonging the interaction time. At high impact velocity, though corrugation and honeycomb sandwich panels are inferior to the equal-weighted solid panels, pyramidal truss ones with high relative density outperform the corresponding solid panels. Multiplying layer is not the desirable way to improve high-velocity projectile resistance.

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“…The quasi-static uniaxial compressive stress-strain curves of the foam with three different relative densities (10%, 15%, and 20%) are plotted in Figure 3. Here, maximum shear strain (MSS=0.4) was used to define the failure criteria of the foam core (Jing et al, 2013). The aluminium alloy face-sheets were represented by material model 104 of LS_DYNA (MAT_DAMAGE_1).…”

Section: Materials Propertiesmentioning

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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Energy absorption and failure mechanism of metallic cylindrical sandwich shells under impact loading

Cited by 58 publications

References 19 publications

Low velocity failure and integrity assessment of foam core sandwich panels

Low velocity failure and integrity assessment of foam core sandwich panels

Numerical Study on the Projectile Impact Resistance of Multi-Layer Sandwich Panels with Cellular Cores

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

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