Numerical-Experimental Correlation of Dynamic Test of a Honeycomb Impact Attenuator for a Formula SAE Vehicle

Vettorello, A.; Campo, Giuseppe Alessio; Goldoni, Gianni; Giacalone, Mauro

doi:10.3390/met10050652

Cited by 9 publications

(5 citation statements)

References 31 publications

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“…Thus, a number of teams purchased the product, tested, and deployed it in their car. As a matter of fact, owing to the complexity of the simulations, a few studies attempted to numerically study the crushing behavior of the honeycomb block in the scope of FS competitions [32][33][34]. An unusual IA design made from aluminum honeycomb panels and aluminum sheets was examined in [33], which met the competition requirements.…”

Section: Introductionmentioning

confidence: 99%

“…An unusual IA design made from aluminum honeycomb panels and aluminum sheets was examined in [33], which met the competition requirements. For purposes of FS competition, in [34], an aluminum honeycomb IA was examined and compared with a hollow truncated thin-walled pyramid and a hybrid IA made from honeycomb panels bonded to several CFRP plates. It was found that all designs met FS requirements and the hybrid IA was the lightest and the most energy-absorbing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On Aluminum Honeycomb Impact Attenuator Designs for Formula Student Competitions

Krzikalla

Měsíček

et al. 2020

Symmetry

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The use of impact attenuators (IA) is important for vehicles as they absorb the kinetic energy exerted from the car crashes to protect the drivers from any possible injuries. Under the framework of the Formula Student (FS) competition, we investigate various designs of IA made of aluminum honeycomb material. Specifically, the crushing behavior of the honeycomb structure is investigated from the theoretical point of view and later verified with numerical simulations. To achieve the desired crushing behavior of the aluminum honeycomb structure, apart from the so-called pre-crushing method, another way to pre-process the aluminum honeycomb is proposed. Modification on the aluminum honeycomb is done in a symmetric manner to ensure the same uniform crushing behavior on the two sides of the mirror plane of the car. Different variations presented in this paper shed a light on future aluminum honeycomb IA designs in the context of FS competitions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On Aluminum Honeycomb Impact Attenuator Designs for Formula Student Competitions

Krzikalla

Měsíček

et al. 2020

Symmetry

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show abstract

“…The uniform-tandem honeycombs with separators have been found to exhibit superior energy absorption capabilities when compared to single-layer honeycombs. [47][48][49][50] However, it is important to note that the deformation sequence of uniform-tandem honeycomb structures is unpredictable due to potential manufacturing imperfections. The gradient strategy is used to deal with imperfections in the tandem honeycomb structure.…”

Section: Introductionmentioning

confidence: 99%

Flatwise compression behaviour and mechanical properties of gradient-tandem nomex honeycomb sandwich panels

Fan,

Li,

Guo

et al. 2023

Jnl of Sandwich Structures & Materials

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The flatwise compression and mechanical response of gradient-tandem Nomex honeycomb sandwich panels were investigated by quasi-static compression tests. Finite element models of the gradient-tandem Nomex honeycomb sandwich panels were established to evaluate the effects of layer sequences, separator materials, and layer heights on the mechanical properties through parametric studies. The different assembly of honeycomb sequence and separator material affected the deformation sequence and peak stress of the sandwich panels. Under quasi-static compression, the response curves are smoother when the appropriate separator material and assembly sequence are chosen. Meanwhile, the peak stresses are effectively reduced. The research results can guide the individualized design of tandem Nomex honeycomb sandwich panels.

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“…Lightweight sandwich structures with lattice cores [1,2] and foam cores [3,4] have been widely studied and applied due to their outstanding mechanical performance [5][6][7]. Lattice cored structures such as pyramidal [8,9], corrugated [10,11], Kagome [12], and honeycomb cores [13][14][15] have advantages in load carrying applications; however, after the loading force reaches its peak, core member softening occurs and leads to an immediate and dramatic decline of load-carrying capacity [8]. In contrast, foam structures have excellent energy absorption properties [16][17][18] and functional designs, such as acoustic absorption [19,20] and thermal insulation [21,22], but their mechanical strength is limited due to the microstructure of the core and defects during the foaming process and high porosity [23].…”

Section: Introductionmentioning

confidence: 99%

Effects of Aluminum Foam Filling on Compressive Strength and Energy Absorption of Metallic Y-Shape Cored Sandwich Panel

Yan

Han

et al. 2020

Metals

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The design of lightweight sandwich structures with high specific strength and energy absorption capability is valuable for weight sensitive applications. A novel all-metallic foam-filled Y-shape cored sandwich panel was designed and fabricated by using aluminum foam as filling material to prevent core member buckling. Experimental and numerical investigation of out-of-plane compressive loading was carried out on aluminum foam-filled Y-shape sandwich panels to study their compressive properties as well as on empty panels for comparison. The results show that due to aluminum foam filling, the specific structural stiffness, strength, and energy absorption of the Y-shape cored sandwich panel increased noticeably. For the foam-filled panel, aluminum foam can supply sufficient lateral support to the corrugated core and vertical leg of the Y-shaped core and causes a much more complicated deformation mode, which cannot occur in the empty panel. The complicated deformation mode leads to an obvious coupling effect, with the stress–strain curve of the foam-filled panel much higher than those of the empty panel and aluminum foam, which were tested separately. Metallic foam filling is an effective method to increase the specific strength and energy absorption of sandwich structures with lattice cores, making it competitive in load carrying and energy absorption applications.

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Numerical-Experimental Correlation of Dynamic Test of a Honeycomb Impact Attenuator for a Formula SAE Vehicle

Cited by 9 publications

References 31 publications

On Aluminum Honeycomb Impact Attenuator Designs for Formula Student Competitions

On Aluminum Honeycomb Impact Attenuator Designs for Formula Student Competitions

Flatwise compression behaviour and mechanical properties of gradient-tandem nomex honeycomb sandwich panels

Effects of Aluminum Foam Filling on Compressive Strength and Energy Absorption of Metallic Y-Shape Cored Sandwich Panel

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