Energy absorption behaviour of an aluminium foam-filled circular-triangular nested tube energy absorber under impact loading

Wang, Yonghui; Zhang, Rong; Liu, Suntao; Zhai, Ximei; Zhi, Xu

doi:10.1016/j.istruc.2021.07.065

Cited by 43 publications

(5 citation statements)

References 43 publications

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“…In addition to the advantage of low mass, the disordered aluminum foam has been used to fill metal tubes because of its excellent energy absorption capacity under extrusion and dynamic impact, [ 48 ] and showed a long stress platform region during plastic deformation. [ 49,50 ] In this study, the pores of ordered porous aluminum were filled with disordered aluminum foam. Deformation characteristics of the pillars at the same level are combined with the simulation results, and two filling methods are proposed as shown in Figure : filling method A fills the pores in the diagonal direction, and filling method B fills all the pores.…”

Section: Methodsmentioning

confidence: 99%

Effect of Aluminum Porous Filling Methods on Mechanical Properties of Ordered– Disordered Porous Composite Structures

Bai

Liu

et al. 2022

Adv Eng Mater

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Herein, ordered porous aluminum is prepared using an indirect additive manufacturing method combining selective laser sintering (SLS) and infiltration casting process. Ordered porous aluminum samples with pore sizes of 7, 9, and 11 mm are prepared by varying the structure of the preforms. The pores of three types of ordered porous aluminum are filled with conventional disordered aluminum foam. Besides, ordered–disordered porous aluminum composite structures with two filling methods are designed and prepared. Afterward, the quasi‐static compression test is conducted on the sample, and the microscopic analysis is performed on the compressed sample. The compression and energy absorption properties of the ordered–disordered porous composite structure are investigated according to the test results. The increasing amount of disordered aluminum foam suppresses the deformation. The effect of the filling method on the compressive properties of the samples changes as the pore size varied. Compared with the ordered porous structures, ordered–disordered porous composite structures demonstrate higher compressive strength and energy absorption capacity with significantly higher platform stress.

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Section: Methodsmentioning

confidence: 99%

Effect of Aluminum Porous Filling Methods on Mechanical Properties of Ordered– Disordered Porous Composite Structures

Bai

Liu

et al. 2022

Adv Eng Mater

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“…where the ( ) EA δ is the energy absorption corresponding to the displacement δ . As illustrated in Figure 8, the sacrificial cladding reaches the densification displacement (xD) when the CFE drops continuously and suddenly [54].…”

Section: Mcf Cfe Pcf =mentioning

confidence: 97%

Behaviour of a Sacrificial Cladding with Foam Concrete-Filled Square Tubes under Impact Loads

Wang

Zhai

2023

Buildings

Self Cite

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In this paper, a new sacrificial cladding with foam concrete-filled square tubes (FCFST sacrificial cladding) was developed for dissipating impact energy. The impact experiment was conducted on the FCFST sacrificial claddings using a drop hammer impact experiment system, and the finite element simulation analysis was performed using the explicit nonlinear program LS-DYNA. The deformation modes, force–displacement responses and energy absorption performances of the FCFST sacrificial claddings were discussed. The results indicated that the impact responses of the FCFST sacrificial cladding could be classified into four stages, and the energy absorption performance could be enhanced by increasing the contact area between the sacrificial cladding and impactor. Foam concrete-filled tubes that underwent obvious plastic deformation dissipated more impact energy than other parts of the sacrificial cladding, and three deformation modes could be identified in theses tubes. Furthermore, the effects of the thickness ratio of the top plate to tube, width-to-thickness ratio of the tube and impact location on the impact behaviour of the FCFST sacrificial cladding were numerically studied. It was found that decreasing the thickness ratio of the top plate to tube could enhance the energy absorption performance of the FCFST sacrificial cladding. However, the impact location was found to have little effect on the energy absorption unless it was close to the edge of the sacrificial cladding.

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“…[1][2][3][4] Thin-walled tubes protect passengers and important components by dissipating most impact energy through deformation and destruction during extreme events such as collisions and emergency landings. [5][6][7] Investigations have shown that these energy-absorbing structures are more often used to carry lateral loads. 8 Therefore, it is necessary to further study the failure mechanism, load response and enhanced design.…”

Section: Introductionmentioning

confidence: 99%

“…With ongoing exploration and research into lightweight design and safety, the field of thin‐walled structures has rapidly advanced and found widespread application in aerospace 1–4 . Thin‐walled tubes protect passengers and important components by dissipating most impact energy through deformation and destruction during extreme events such as collisions and emergency landings 5–7 . Investigations have shown that these energy‐absorbing structures are more often used to carry lateral loads 8 .…”

Section: Introductionmentioning

confidence: 99%

Crushing behavior of CFRP/AL hybrid tubes under oblique lateral loading

Yang

Ren

2023

Polymer Composites

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This work aims to research the oblique lateral crushing behavior of CFRP/AL hybrid tubes under different parameter configurations. First, a finite element model was established based on the maximum stress criterion and the traction‐separation law. The reliability of the numerical models for pure aluminum, pure composite, and hybrid tubes was verified by rigorous comparison with experimental data, respectively. Second, the influence of loading conditions and geometric characteristics on crashworthiness were studied. The results show that the damage modes of the hybrid tube under oblique lateral loading are mainly concentrated in the horizontal and vertical ends, specifically in the form of plastic hinge and fiber, matrix fracture. The CFRP layers has positive effect on improving the specific energy absorption (SEA). High ratio thickness of aluminum tubes can effectively improve the energy absorption (EA) and crush force efficiency (CFE). It is found that the sandwich structure is not conducive to resist lateral crushing, while the CFRP without external constraints can absorb more impact energy.Highlights The oblique lateral crushing behavior of CFRP/AL hybrid tube was studied. A numerical simulation method was proposed and verified. The effects of loading angle, fiber layers and AL thickness were studied. The hybrid ratio and hybrid method were designed and discussed.

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Energy absorption behaviour of an aluminium foam-filled circular-triangular nested tube energy absorber under impact loading

Cited by 43 publications

References 43 publications

Effect of Aluminum Porous Filling Methods on Mechanical Properties of Ordered– Disordered Porous Composite Structures

Effect of Aluminum Porous Filling Methods on Mechanical Properties of Ordered– Disordered Porous Composite Structures

Behaviour of a Sacrificial Cladding with Foam Concrete-Filled Square Tubes under Impact Loads

Crushing behavior of CFRP/AL hybrid tubes under oblique lateral loading

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