A novel damage mechanism analysis of integrally braided CFRP and CFRP/Aluminum hybrid composite tube subjected to transverse impact

Pan, Zhongxiang; Qiao, Feng; Wang, Mingling; Wu, Zhenyu; Zhang, Ying

doi:10.1016/j.matdes.2021.109815

Cited by 37 publications

(6 citation statements)

References 53 publications

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“…It has been shown that the hybrid tube exhibits good ductility and high average load under lateral loading 35–37 . The hybrid effect not only prevents local catastrophic fractures but also inhibits damage development to some extent 38 . Further studies can reveal that the lateral load carrying capacity of the hybrid tube can be improved by changing the stacking sequence and angle, and the conclusions obtained greatly expand the design of the structure for crashworthiness 39–41 .…”

Section: Introductionmentioning

confidence: 92%

“…[35][36][37] The hybrid effect not only prevents local catastrophic fractures but also inhibits damage development to some extent. 38 Further studies can reveal that the lateral load carrying capacity of the hybrid tube can be improved by changing the stacking sequence and angle, and the conclusions obtained greatly expand the design of the structure for crashworthiness. [39][40][41] Interestingly, aluminum foam has a positive effect on enhancing the lateral compressive capacity of structures and it is not constrained by geometrical features, thus offering good prospects for development.…”

Section: Introductionmentioning

confidence: 93%

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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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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 93%

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

Yang

Ren

2023

Polymer Composites

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“…In their study, Ata and Coker 14 utilized 2D and 3D FEM (with a cohesive zone approach) Pan et al 13 investigate delamination in bent unidirectional CFRP laminates under axial loading conditions. According to Pan et al 15 delamination initiation was observed in a 3D model. The authors used micro CT characterization, high speed infrared thermography, and full scale meso-structural simulations to investigate the damage mechanism of CFRP composite tubes.…”

Section: Main Failure Modesmentioning

confidence: 99%

Optimization of geometrical factors for enhanced performance of carbon fiber reinforced polymer cores under transverse loading

Pradhan

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The high strength-to-weight ratio and ease of manufacturing of composite materials make them widely used across a variety of industries. A commonly used method of improving composite structure load-bearing capacity is to employ carbon fiber-reinforced polymer (CFRP) cores. The mechanical properties of CFRP, however, vary in different directions due to its anisotropic behavior. Due to higher tensile strength along the fibers, anisotropy can lead to failure based on directions other than the fiber orientation. A thorough analysis of CFRP core failure modes has been conducted. Experimental analysis, finite element analysis, and micromechanical modeling techniques have been used in these studies. In this research, specific emphasis has been placed on understanding failure behavior under transverse loading conditions. Failure modes have been thoroughly examined in relation to geometric parameters such as interference, wedge angle, and friction coefficient. Modeling CFRP core failure and displacement behavior was carried out using FEA simulations to validate the research findings. A comparison of the obtained results with existing literature ensured that they were accurate and reliable. Additionally, response surface methodology was employed for optimization, aiming to minimize two critical factors: radial compressive stress and core displacement. By minimizing these factors, the performance and reliability of CFRP cores in applications related to grid capacity can be enhanced. The analysis of the research data revealed that the friction coefficient and interference play significant roles as interacting factors, albeit with opposite impacts on the stresses within the CFRP cores. The optimal values for interference and friction coefficient were found to be 0.0224 mm and 0.4, respectively, to minimize radial stress. Furthermore, the wedge angle exhibited a substantial influence on core displacement, with an optimal value of 3.5°.

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“…Research has also shown that the braiding angle in braided composite cylinders has a considerable influence on the fracture behavior and failure modes created under different loadings. [21][22][23][24] Gu et al 3 investigated the torsion progressive damage and failure mechanism of two-dimensional (2D) braided carbon/epoxy composite cylinders with four braiding angles including; 30 , 45 , 55 , and 60 . They used three-dimensional digital image correlation to monitor the crack propagation and progressive torsional strain.…”

Section: Introductionmentioning

confidence: 99%

“…They used common strain gauges to carry out strain measurements without any discussion on strain distribution over the braid. Research has also shown that the braiding angle in braided composite cylinders has a considerable influence on the fracture behavior and failure modes created under different loadings 21–24 . Gu et al 3 investigated the torsion progressive damage and failure mechanism of two‐dimensional (2D) braided carbon/epoxy composite cylinders with four braiding angles including; 30°, 45°, 55°, and 60°.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the effect of fiber path curvature on the fracture behavior of braided composite cylinders; experimental study

Mojarrad,

Dabiryan,

Gharehaghaji

et al. 2023

Polymer Composites

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Different failure modes occur in textile‐reinforced composite under applied loads. Fracture mechanism of braided composites are closely related to the geometry of braids. In the present study, fracture mechanism of glass/epoxy braided composite cylinders is investigated under tensile loads. For this purpose, glass/epoxy braided composites were fabricated using braids with braiding angles of 30°, 45°, and 57° to find the role of fiber path on the fracture mechanism. To determine the fiber path, helixes on the cylinders with aforementioned angles was considered and analyzed. New fixtures (jaws) were designed and manufactured for tensile testing of cylindrical composites. Tensile tests were carried out on the prepared samples to evaluate the failure modes of composites. The SEM micrographs of samples are provided after tensile test. Various failure modes were observed regarding the angle of the braid. Fiber breakage, matrix fracture, and debonding are the dominant modes that occur in braided composites proportional to the angle of braids. Fiber breakage is the dominant mode in the 30° angle braid reinforced composite, while the dominant failure mode in the 57° angle braid reinforced composite is matrix fracture. In composites with a braid angle of 45°, a combination of fracture modes occurred. In addition, energy absorption as well as specific energy absorption (SEA) of braided composite cylinders were also investigated and obtained from load–displacement curves. The results showed that the reinforced composite with a braid angle of 30° absorbs the lowest amount of energy (21.5 J) and also the lowest amount of specific energy (5375 J/kg). The maximum absorbed energy (67.7 J) and the maximum SEA (9675 J/kg) were observed in the reinforced composite with a braid angle of 45°.Highlights Fiber breakage is the dominant mode at the 30° angle braid reinforced composite. The dominant failure mode at the 57° angle braid reinforced composite is matrix fracture. In composites with the braid angle of 45°, a combination of fracture modes occurred. The composite reinforced with a braid angle of 30° absorbs the lowest amount of energy (21.5 J) and also the lowest amount of specific energy (5375 J/kg). The maximum absorbed energy (67.7 J) and the maximum SEA (9675 J/kg) were observed in the reinforced composite with a braid angle of 45°.

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A novel damage mechanism analysis of integrally braided CFRP and CFRP/Aluminum hybrid composite tube subjected to transverse impact

Cited by 37 publications

References 53 publications

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

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

Optimization of geometrical factors for enhanced performance of carbon fiber reinforced polymer cores under transverse loading

Analyzing the effect of fiber path curvature on the fracture behavior of braided composite cylinders; experimental study

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