Study on the axial impact of <scp>Al‐CFRP</scp> thin‐walled tubes with induced design

Zha, Yibin; Wang, Shun; Ma, Qihua; Zhang, Hui; Xue‐hui,; Zhou, Tianjun

doi:10.1002/pc.26720

Cited by 21 publications

(10 citation statements)

References 54 publications

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“…[11][12][13][14][15][16][17][18] Lately, hybrid materials were applied as they combine the plastic distortion of metals and the superior specific strength and stiffness of composites. [19][20][21][22][23][24][25][26] Different cross-sectional geometries are commonly implemented in crashworthy elements such as circular, [27][28][29][30] polygon, [31][32][33][34][35] corrugated [36] and multicells. [37][38][39] Energy absorption elements are tested under different loading conditions like axial, [40][41][42] lateral, [43,44] oblique [45,46] and bending.…”

Section: Introductionmentioning

confidence: 99%

The influence of induced holes on crashworthy ability of glass reinforced epoxy square tubes

2022

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The crashworthy ability of glass/epoxy (GFRP) square tubes with induced holes was studied under quasi‐static axial crashing. Four design parameters were chosen, each at three levels, to calculate crashworthiness indicators. The design variables are hole diameter (d), hole position/specimen length (P/L), number of holes/distribution (n), and speed (V). To get the optimum crashworthiness parameters, the design of experiments approach using Taguchi technique was adapted. Optimal conditions with minimum initial peak force (normalFip), maximum absorbed energy (U) and maximum specific energy absorption (SEA) were determined. Main effect, signal/noise ratio (S/N), and analysis of variance (ANOVA) were determined using MINITAB 18. Experiments based on L9 orthogonal array were performed. Results indicated that the dominant influencing parameter on normalFip is “n” with a contribution of 93.97%. “V” followed by “d” are the highest influencing parameters on “U” with a contribution of 49.07 and 43.02%, respectively. “d” is the highest influencing parameter on SEA, followed by “V” with a contribution of 50.71% and 46.12%, respectively. Confirmation tests were carried out to validate the estimated model with respect to experimental results. normalFip, U, and SEA of intact tube were 45.05 kN, 830.32 × 10−3 kJ, and 8.23 × 10−3 kJ/g, respectively. The optimum normalFipof GFRP tubes with cutouts was found to be 38.59% smaller than that of the intact specimen. The optimum U and SEA of are, respectively, 4.73% and 25.76% greater than those of intact specimen.

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Section: Introductionmentioning

confidence: 99%

The influence of induced holes on crashworthy ability of glass reinforced epoxy square tubes

2022

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“…Hybrids have been adapted in energy absorbers as they combine plastic deformation of metallic materials and greater specific stiffness and/or strength of composites 9 , 10 . Many scholars examined the collapse performance of hybrid pipes.…”

Section: Introductionmentioning

confidence: 99%

“…Composites do not exhibit plastic deformation due to the fragility. Composite materials absorb energy by crushing and delamination 7,8 .Hybrids have been adapted in energy absorbers as they combine plastic deformation of metallic materials and greater specific stiffness and/or strength of composites 9,10 . Many scholars examined the collapse performance of hybrid pipes.…”

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confidence: 99%

Lightweight cost-effective hybrid materials for energy absorption applications

El‐baky

Allah

Kamel

et al. 2022

Sci Rep

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The present paper experimentally explores the influence of the fiber hybridization and layering sequence on crashworthiness behavior and deformation history of polymer/metal thin-walled pipes. Jute (J)/glass (G) reinforced epoxy over wrapped aluminum (Al) pipes were prepared via hand wet wrapping then subjected to axial quasi-static compressive loads. The load versus displacement plots and crashing indicators, i.e. peak crushing load ($${\mathrm{F}}_{\mathrm{ip}}$$ F ip ), mean crushing load ($${\mathrm{F}}_{\mathrm{m}}$$ F m ), total energy absorption ($$\mathrm{U})$$ U ) , specific energy absorption $$\left(\mathrm{SEA}\right)$$ SEA , and crush force efficiency $$\left(\mathrm{CFE}\right)$$ CFE were determined. Experimental results revealed that the maximum $$\left(\mathrm{SEA}\right)$$ SEA was recorded for Al/2J/4G/2J pipe with a value of about 42.92 kJ/g, with an enhancement of 20.56% in $$\left(\mathrm{SEA}\right)$$ SEA compared with pure Al-pipes. Al/2J/4G/2J specimens display the maximum ($$\mathrm{U})$$ U ) , $$\left(\mathrm{SEA}\right)$$ SEA , and $$\left(\mathrm{CFE}\right)$$ CFE and could be employed as energy absorbing members in automobiles.

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“…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][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.…”

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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Study on the axial impact of Al‐CFRP thin‐walled tubes with induced design

Cited by 21 publications

References 54 publications

The influence of induced holes on crashworthy ability of glass reinforced epoxy square tubes

The influence of induced holes on crashworthy ability of glass reinforced epoxy square tubes

Lightweight cost-effective hybrid materials for energy absorption applications

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

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