Crush behaviour of foam-filled thin-walled conical frusta: analytical, numerical and experimental studies

Meguid, S. A.; Yang, Fan; Hou, Peng

doi:10.1007/s00707-016-1662-x

Cited by 17 publications

(4 citation statements)

References 32 publications

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“…20 Toward this end, scholars have conducted extensive research on crash-worthiness characteristics of aluminum foam-filled TWSs. 21–28 For instance, Zhang et al 29 investigated dynamic response and energy absorption performance of aluminum foam-filled sandwich circular tubes under internal blast loading. Wang et al 30 studied the energy absorption behavior of an aluminum foam-filled circular-triangular nested tube energy absorber under impact loading; Sun et al 31 conducted experimental and numerical investigation into the crashworthiness of aluminum-foam-composite hybrid structures; Qi et al 32 executed comparative study on empty and foam-filled hybrid material double-hat beams under lateral impact.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective robust optimization of foam-filled double-hexagonal crash box using Taguchi-grey relational analysis

Xiong,

Wang,

Wang

et al. 2023

Advances in Mechanical Engineering

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In this paper, a novel thin-walled double-hexagonal crash box is first proposed and then multi-objective robust optimized for better overall crashworthiness under multi-angle impact loading, using a proposed hybrid method combining aluminum foam-filling and Taguchi-grey relational analysis (GRA). Specifically, the finite element (FE) models of the regularly-shaped double-hexagonal column (DHC) extracted from original irregularly-shaped crash box under multi-angle impact loading, including hollow (H-DHC) and foam-filled (F-DHC), are first built and validated by experiments. On this basis, a comprehensive crashworthiness comparison is conducted to explore relative merits of F-DHC over original H-DHC under multi-angle impact loading. After that, the F-DHC is multi-objective robust optimized for maximizing overall specific energy absorption (SEAθ) and minimizing overall initial peak crushing force (IPCF0) simultaneously under multi-angle impact loading, using a hybrid method of Taguchi-GRA. At last, a bumper-crash box integrated crashworthiness analysis under multi-angle impact loading is executed to further verify the optimization. The optimal F-DHC and the optimized crash box within the optimal F-DHC demonstrate evident improvement of crashworthiness compared to their respective initial designs, indicating aluminum foam-filling combined with Taguchi-GRA could be an effective approach for multi-objective robust optimization of the novel crash box and other similar vehicle structures.

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Section: Introductionmentioning

confidence: 99%

Multi-objective robust optimization of foam-filled double-hexagonal crash box using Taguchi-grey relational analysis

Xiong,

Wang,

Wang

et al. 2023

Advances in Mechanical Engineering

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“…A large number of research works have been conducted to study the influence of aluminum foam on energy absorption of thin-walled structures. Meguid et al [10][11][12][13][14][15] studied the axial collapse behavior of various foam-filled structures and revealed the effect of key influencing parameters on the collapse mechanism and energy characteristics. Goel et al [16] conducted the deformation and energy absorption studies on a multi-wall tube structure with an aluminum core.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Experimental Study on Energy Absorption of Foam-Filled Local Nanocrystallized Thin-Walled Tubes under Axial Crushing

Wang

Zhao

et al. 2022

Materials

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A crashworthiness design of foam-filled local nanocrystallized thin-walled tubes (FLNTs) is proposed by using foam-filled structures and ultrasonic impact surface treatment. The crashworthiness and deformation modes of FLNTs are studied using an experiment and numerical analysis. A finite element numerical model of FLNTs is established, and the processing and test platform of FLNTs is set up to verify the numerical predication and analytical design. The results show that local nanocrystallization is an effective method to enhance crashworthiness for hexagonal FLNTs. The FLNTs with four circumferential continuous stripes of surface nanocrystallization exhibit a level of 47.12% higher specific energy absorption than the untreated tubes in numerical simulations for tubes with a 50% ratio of nanocrystallized area. Inspired by the strength mechanism, a novel nested foam-filled local surface nanocrystallization tube is further designed and studied in detail.

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“…In addition, Meguid et al. 28 and Zhu et al. 29 performed a detailed study of the crush behaviour of foam-filled using numerical, analytical and experimental techniques.…”

Section: Introductionmentioning

confidence: 99%

“…It showed that the mean crushing load dropped noticeably over the transition region for the fully clamped conical and cylindrical tubes. In addition, Meguid et al 28 and Zhu et al 29 performed a detailed study of the crush behaviour of foam-filled using numerical, analytical and experimental techniques. The results showed that introducing a taper angle in a straight column could help to reduce the initial crippling load and increase the resistance to global buckling.…”

Section: Introductionmentioning

confidence: 99%

Dynamic crashing behavior of thin-walled conical tubular structures with nonlinearly-graded diameters

Suo

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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Thin-walled structures with graded property have been paid more attention in recent years due to their significant balance between lightweight and crashworthiness. However, few studies have been focused on energy absorption capacity of thin-walled conical tubes with graded diameters. In this paper, the thin-walled conical aluminum tubes with nonlinearly-graded diameters are introduced and their corresponding crashing characteristics are performed. The diameters are assumed to nonlinearly vary according to a power-law distribution function primarily determined by a graded exponent n. It is found that the total weight of thin-walled conical tubes decreases with the increasing of the gradient exponent. The energy-absorbed performances such as specific energy absorption, initial peak crashing force, and mean crashing force of those graded tubular structures are numerically analyzed. And then the effects of various geometric parameters such as the gradient exponent, deformation distance, and diameter range on crashing behaviors are further evaluated. It is observed that those parameters especially the gradient exponent has significantly obvious effects on crashworthiness of the proposed nonlinearly graded tubes. It is also noted that the straight conical structure with gradient n = 1.0 may not show the best energy absorption characteristics compared with other gradients. The work could provide valuable information for effective design of thin-walled energy-absorbing structures with variable geometrical parameters.

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Crush behaviour of foam-filled thin-walled conical frusta: analytical, numerical and experimental studies

Cited by 17 publications

References 32 publications

Multi-objective robust optimization of foam-filled double-hexagonal crash box using Taguchi-grey relational analysis

Multi-objective robust optimization of foam-filled double-hexagonal crash box using Taguchi-grey relational analysis

Numerical Simulation and Experimental Study on Energy Absorption of Foam-Filled Local Nanocrystallized Thin-Walled Tubes under Axial Crushing

Dynamic crashing behavior of thin-walled conical tubular structures with nonlinearly-graded diameters

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