Static and Dynamic Axial Crushing of Externally Reinforced Tubes

Wang, X G; BLOCH, JEAN; Cesari, Dominique

doi:10.1243/pime_proc_1992_206_138_02

Cited by 15 publications

(2 citation statements)

References 6 publications

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“…Shin et al [ 38 ] and Wierzbicki et al [ 39 ] analyzed the energy absorption mechanism of hybrid tubes under axial compression and established the mean crushing force prediction model of hybrid square tubes and circular tubes with 90° circumferential fibers respectively, which were verified by experiments. [ 39,40 ] Bambach [ 41,42 ] derived the mean crushing force prediction expressions of CFRP‐metal hybrid square tube from a series of quasi‐static axial compression experiments and compared them with the experimental results. Zhang et al, [ 43 ] Wang and Lu, [ 44 ] also presented prediction models similar to Wierzbicki et al [ 39 ] The former put forward a formula for predicting the folding angle of SFE in the hybrid tubes, the latter took into account the influence of winding angles on energy absorption, and was also suitable for hybrid circular tubes under dynamic impact load.…”

Section: Introductionmentioning

confidence: 99%

Theoretical prediction model of mean crushing force of CFRP‐Al hybrid circular tubes under axial compression

Bai

et al. 2021

Polymer Composites

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The CFRP-Al hybrid thin-walled structure combines the dual advantages of carbon fiber reinforced plastics (CFRP) and metal, which is one of the crucial methods for both lightweight and high strength. This study aimed to explore the theoretical prediction of the mean crushing force of the hybrid tubes with different winding angles subjected to axial compression. In order to construct the theoretical model of the hybrid structural energy absorption response, the failure modes, and deformative behavior of the hybrid tubes are analyzed and summarized based on the axial compression experiments. Considering the effects of winding angles on the energy dissipation and deformation characteristic of hybrid circular tubes, the expressions of membrane force and binding energy per unit length are obtained. Then, the analytical model is established to predict the mean crushing force of the CFRP-Al hybrid circular tube. Furthermore, the results of the prediction model are compared according to different failure criteria of composite materials. The findings show that the predicted values of the maximum stress failure are more consistent with the experimental values, in which the discrepancy between analytically predicted and experimentally tested mean crushing forces of these hybrid tubes is no more than 10%. The results can provide a basis for the design of the composite-metal hybrid thin-walled tube.

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Section: Introductionmentioning

confidence: 99%

Theoretical prediction model of mean crushing force of CFRP‐Al hybrid circular tubes under axial compression

Bai

et al. 2021

Polymer Composites

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“…They also concluded that there are three dominant failure modes, among which the progressive stable crushing mode results in a more beneficial mean force. 17 Hanefi et al 18 was one of the pioneers of exploiting reinforced metal-composite walls as energy absorbers. Moreover, energy absorbers with different fiber reinforcements were also studied in.…”

Section: Introductionmentioning

confidence: 99%

A novel corrugated carbon-fiber composite tube with circular corrugations on the lateral surface for crashworthiness: Manufacturing method, experimental and numerical analysis

Sadighi

Asgari

2023

Journal of Composite Materials

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A novel design and method of manufacture of laterally corrugated composite tube is proposed. One of the main issues with studying such corrugated composite tubes has been taking out the mandril from the composite specimens, leading to very little, if any, experimental research into this subject. Therefore, as the main novelty of this paper, a multi-step process has been thoroughly explained to overcome these manufacturing challenges, i.e., the use of ABS corrugated mandrels, silicone molds, wax mandrels, filament winding, and finally heating the wax mandrel to melt. At the end of this process, the lateral corrugated composite tube is obtained. There are two different types of specimens: conical corrugated composite tube and cylindrical corrugated composite tube. From each category, two specimens are tested, whose crashworthiness results are then compared with one another to see which design offers better energy absorption capacity. Subsequently, using the experimental data, a finite element model is developed and validated to numerically look into the effect of number of corrugations on the crashworthiness of the structures. To do so, the specific energy absorption (SEA), peak force, mean force, and crushing force efficiency (CFE) of each model have been compared with one another. It is understood from both experiments and numerical study that the conical composite tubes offer better crashworthiness as they can absorb more energy and maintain a higher mean force than the cylindrical ones. For instance, in the experiments, it was observed the conical corrugated composite tube had an SEA of 12.37 kJ/kg, while this value for cylindrical one was 8.38 kJ/kg. Moreover, with an increase in the number of corrugations within a set length for the tube, the energy absorption capacity of the structure can be increased. To provide a better understanding of the observation, with an increase in the number of corrugations from 12 to 18, SEA increased from 9.21 to 12.43 kJ/kg in the cylindrical models, and from 10.80 to 13.01 kJ/kg in conical ones.

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On the role of local reinforcement in an adhesively bonded AL/CFRP energy absorber under axial loading: A theoretical investigation and optimization

Rahmani,

Keshavarzi,

Googarchin

2024

Polymer Composites

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This paper aims to develop a novel theoretical model that incorporates the effects of local composite reinforcement using adhesive bonding on the energy absorption of aluminum structures under axial loading. The goal is to optimize energy absorption prior to any connection failures and to prevent uneven structural deformation. Moreover, it strives to reduce the structure's weight and material usage, achieving superior results compared to traditional global reinforcement techniques. The theoretical model was validated through experimental testing and finite element analysis, demonstrating good agreement with the predicted results. The results reveal that increasing the CFRP fiber angle, layer thickness, and number of layers generally leads to improved energy absorption capacity. An optimization analysis was performed to determine the optimal design parameters, yielding a fiber angle of 80°–90°, composite thickness of 1.5 mm, and aluminum thickness of 2.5 is the best configuration, offering the highest specific energy absorption and adequate peak load capacity for maximized energy absorption. The proposed model offers significant improvements over existing approaches, enhancing the predictive capabilities and practical applicability of energy absorption predictions in engineering design.Highlights A novel theoretical model for energy absorption in locally reinforced hybrid AL/CFRP structures. The influence of design parameters, such as CFRP layer count, fiber orientation, and thickness ratio. Optimization to maximize the average crushing force while meeting weight and geometric constraints. Findings can inform the design of safer and more efficient energy‐absorbing structures in various applications.

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Static and Dynamic Axial Crushing of Externally Reinforced Tubes

Cited by 15 publications

References 6 publications

Theoretical prediction model of mean crushing force of CFRP‐Al hybrid circular tubes under axial compression

Theoretical prediction model of mean crushing force of CFRP‐Al hybrid circular tubes under axial compression

A novel corrugated carbon-fiber composite tube with circular corrugations on the lateral surface for crashworthiness: Manufacturing method, experimental and numerical analysis

On the role of local reinforcement in an adhesively bonded AL/CFRP energy absorber under axial loading: A theoretical investigation and optimization

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