An analytical model for composite sandwich panels with honeycomb core subjected to high-velocity impact

Feli, S.; Pour, Masoud

doi:10.1016/j.compositesb.2011.11.028

Cited by 69 publications

(21 citation statements)

References 20 publications

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“…It was observed that folding of the cell walls and shearing of the plug play the major role in energy dissipation and ballistic resistance of the aluminum honeycomb panels against projectiles [6]. It was also found that the energy absorption capability of the honeycomb is very low, and its cell size, wall thickness, and core thickness have little effects on the penetration resistance of the sandwich panel [7].…”

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

119

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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

119

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“…A lot of researches had been made on metal honeycomb structure, but researches on its thermoplasticity is rare and preliminary, among which thermo-elastic analysis [1], impact damage [2,3] and elastoplastic analysis [4][5][6][7] of metal honeycomb structure have been studied extensively, and mathematical models for thermal systems are also available in open literature [8,9]. Figure 1 is a plate with considered composite material structure to withstand heat shock.…”

Section: Introductionmentioning

confidence: 99%

Thermo-plastic finite element analysis for metal honeycomb structure

2013

THERM SCI

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This paper deals with thermal-plastic analysis for the metal honeycomb structure. The heat transfer equation and thermal elastoplastic constitutive equation of a multilayer panel are established and studied numerically using ANSYS software. The paper elucidates that only the outer skin produces easily plastic deformation, and the outer skin still exists some residual stress and residual deformation after cooling. The dynamic evolution of plastic deformation and material performance degradation under high energy thermal load are revealed.

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“…Substantial efforts have been devoted to the projectile impact behavior of metallic honeycomb panels through experimental [2–8], analytical [9–12], and numerical methods [7, 13–15]. Goldsmith and coworkers [2–4] conducted a series of experimental tests for the perforation characteristics of aluminum honeycombs and honeycomb sandwich plates impacted by various strikers.…”

Section: Introductionmentioning

confidence: 99%

“…Liaghat et al [11] introduced an analytical model to predict the ballistic limit of metallic honeycombs impacted by cylindrical projectiles. More recently, Feli and Pour [12] presented an analytical model for simulating perforation of composite sandwich panels with honeycomb core subjected to high-velocity impact. The residual velocity, perforation time, velocity-time history of projectile, and absorbed energy of sandwich panel computed by the analytical model have an acceptable consistency with experimental and numerical results.…”

Section: Introductionmentioning

confidence: 99%

Ballistic Resistance of Honeycomb Sandwich Panels under In‐Plane High‐Velocity Impact

Yang

Dong

et al. 2013

The Scientific World Journal

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The dynamic responses of honeycomb sandwich panels (HSPs) subjected to in-plane projectile impact were studied by means of explicit nonlinear finite element simulations using LS-DYNA. The HSPs consisted of two identical aluminum alloy face-sheets and an aluminum honeycomb core featuring three types of unit cell configurations (regular, rectangular-shaped, and reentrant hexagons). The ballistic resistances of HSPs with the three core configurations were first analyzed. It was found that the HSP with the reentrant auxetic honeycomb core has the best ballistic resistance, due to the negative Poisson's ratio effect of the core. Parametric studies were then carried out to clarify the influences of both macroscopic (face-sheet and core thicknesses, core relative density) and mesoscopic (unit cell angle and size) parameters on the ballistic responses of the auxetic HSPs. Numerical results show that the perforation resistant capabilities of the auxetic HSPs increase as the values of the macroscopic parameters increase. However, the mesoscopic parameters show nonmonotonic effects on the panels' ballistic capacities. The empirical equations for projectile residual velocities were formulated in terms of impact velocity and the structural parameters. It was also found that the blunter projectiles result in higher ballistic limits of the auxetic HSPs.

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An analytical model for composite sandwich panels with honeycomb core subjected to high-velocity impact

Cited by 69 publications

References 20 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

Thermo-plastic finite element analysis for metal honeycomb structure

Ballistic Resistance of Honeycomb Sandwich Panels under In‐Plane High‐Velocity Impact

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