Crashworthiness analysis of polymer composites under axial and oblique impact loading

Patel, Shivdayal; Vusa, Venkata Ravi; Soares, C. Guedes

doi:10.1016/j.ijmecsci.2019.03.038

Cited by 73 publications

(30 citation statements)

References 36 publications

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“…Previous studies have shown that fiber winding angle is an important factor affecting its performance and failure modes in axial compression. [34][35][36][37] Figure 7 shows the final deformation forms and microscopic details of the four winding angle hybrid tubes under radial compression and Figure 8 gives the force/energy-displacement curves of the hybrid tubes. Clearly, with increase of winding angle, the failure modes become more complex and exhibit more serious delamination and debonding in the microscopic pictures, but the total load capacity is improved.…”

Section: Al-cfrp Hybrid Tubementioning

confidence: 99%

Deformation and energy absorption characters of Al‐CFRP hybrid tubes under quasi‐static radial compression

Zha

et al. 2020

Polymer Composites

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To take into account the lightweight and collision safety of the energy absorber, metal-composite hybrid thin-walled tubes have been widely studied, which combine the low-cost metal and high-strength composites. Therefore, the deformation mechanism and the characteristics of the carbon fiber reinforced plastic wound thin-walled aluminum tube (Al-CFRP) were investigated under radial compression condition. Firstly, aluminum tubes, CFRP tubes, and four winding angles of Al-CFRP hybrid tubes (27 , 45 , 74 , 90) are experimentally analyzed. The contrastive results show that the stability and energy absorption of the Al-CFRP hybrid tube are improved and the winding angle is one of the important factors that affects the radial compression performance of the hybrid tube. And then based on the hybrid model, some theoretical relations are derived to forecast the initial collapse force and energy absorption quickly. The theoretical analysis shows that the radial force on the hybrid tube during the compression is also dependent on the thickness ratio of Al-CFRP layers complicatedly except the winding angle. Therefore, the effects of the winding angle (0-90) and thickness ratio of Al-CFRP layers (0.25-3.5) on the radial compression performance are investigated. The theoretical predication results show that the hybrid with the winding angle of 90 and thickness ratio of Al-CFRP layers of 0.25 performs over six times of the initial collapse force than the Al tube. Finally, the simulated model based on ANSYS and LS-DYNA is established to explain the reason for the better radial compression performance (A5C10S90) and the deformation mechanism of the hybrid tube, through the stress analysis of inner Al tube, inner CFRP layer, and outer CFRP layer, respectively. It is found that the Al-CFRP hybrid tube (especially 90) under radial compression shows better bearing capacity which represents the higher initial collapse force, total energy absorption and specific energy absorption, due to the supporting of the inner Al tube and the protection of the outer CFRP tube.

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Section: Al-cfrp Hybrid Tubementioning

confidence: 99%

Deformation and energy absorption characters of Al‐CFRP hybrid tubes under quasi‐static radial compression

Zha

et al. 2020

Polymer Composites

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“…Nowadays, construction and civil sector has become one of the world's largest consumers of polymer composites and recently fiber reinforced polymer (FRP) composites especially glass fiber reinforced polymer (GFRP) have gained a great worldwide interest in civil, construction and other applications due to their advantages including lightness, high mechanical performance, possibility of fabrication in any shape, ease of installation. The mechanical properties of polymer composites such as glass fiber reinforced polymer composites make fiber matrix attractive for structural and energy absorption applications due to low cost, low density, high stiffness and strength-to-weight ratio [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Environmental Exposure on the notch sensitivity of GFRP Composites Used in Construction

2020

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T HE present research investigated the effect of different environmental conditions including moisture, saline and alkaline conditions on the notch sensitivity of short and 2D plain woven glass fibers reinforced epoxy matrix composites fabricated by the hand lay-up technique with fiber volume content of 23.5 and 38.6 vol.%, respectively. The test was carried out through open hole tension test at constant ratio of (D/W = 0.2) and the notch sensitivity of these composites under different environmental conditions was evaluated by comparing the notched tensile strength and the characteristic distance (do) of these composites applying Whitney-Nuismer mathematical model. The obtained results indicated that the environmental exposure has a pronounced negative effect on the notched tensile strength of all composites compared to the unconditioned state (virgin state). Moreover, the fracture zone of the composites under the alkaline environment is smooth and shows much less fiber pull out validated by SEM micrographs which distinguishes brittle failure.

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“…A lot of recent work on the crashworthiness of common composite reinforcements including singular fiber systems of glass or carbon fiber-reinforced polymer structures has also been performed, including work by Ataabadi et al, 10 Chen et al, 11 Patel et al, 12 Kathiresan et al, 13 Jiang et al, 14 Striewe et al, 15 and Zhou et al 16 Among these studies, certain authors have also investigated structural geometries other than circular tubes including Kathiresan et al that have studied the low-velocity axial collapse behavior of E-glass fiber/epoxy composite conical frusta, and both Jiang et al and Striewe et al have investigated the crashworthiness of hat-shaped composite structures. Chen et al and Zhou et al focused on the axial crushing behavior of square tube profiles.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness of polystyrene foam and cardboard panels reinforced with carbon fiber reinforced polymer and glass fiber reinforced polymer composite rods

Fortin

Elbadry

Yokoyama

2020

Journal of Reinforced Plastics and Composites

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This article presents an experimental study on the quasi-static crushing performance of carbon fiber reinforced polymer (CFRP) rods consisting of unidirectional carbon fibers wrapped by braided glass fibers. Rods with and without a taper are tested and then inserted in extruded and expanded polystyrene foam and cardboard panels. Hybrid columnar aluminum tube–CFRP rod structures are also tested in all panel materials. These results are compared to those based on glass fiber reinforced polymer (GFRP) rods, GFRP rods in polystyrene foams, and to GFRP rods in cardboard from a previous study. Tapered CFRP rods exhibit progressive crushing behavior with specific energy absorption superior to GFRP rods, with values of 82 kJ/kg and 65 kJ/kg, respectively. Moreover, the highest specific energy absorption (111 kJ/kg) is obtained in hybrid columnar aluminum tube–CFRP tapered rods, exceeding values of aluminum tubes (89 kJ/kg) and equivalent structures containing GFRP rods (102 kJ/kg). Within panels, cardboard produces the largest increase in mean load of CFRP and GFRP rods due to most constraining fiber splaying during crushing, followed by extruded foam, and lastly expanded foam. However, crushing displacement is most restricted in cardboard due to earlier final compaction. The smallest variations in crushing load occur in extruded polystyrene due to greater homogeneity throughout the foam structure.

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Crashworthiness analysis of polymer composites under axial and oblique impact loading

Cited by 73 publications

References 36 publications

Deformation and energy absorption characters of Al‐CFRP hybrid tubes under quasi‐static radial compression

Deformation and energy absorption characters of Al‐CFRP hybrid tubes under quasi‐static radial compression

Effect of Environmental Exposure on the notch sensitivity of GFRP Composites Used in Construction

Crashworthiness of polystyrene foam and cardboard panels reinforced with carbon fiber reinforced polymer and glass fiber reinforced polymer composite rods

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