Experimental and Numerical Investigation of Axial Compression Behaviour of FRP-Confined Concrete-Core-Encased Rebar

Lu, Jingzhou; Huang, Han; Li, Yunkai; Mou, Tong

doi:10.3390/polym15040828

Cited by 2 publications

(4 citation statements)

References 25 publications

(29 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The basic mechanical properties of specimens C and c under tension–compression cyclic loading are compared with the monotonic compression performance in [ 22 ]. From Figure 10 , it can be seen that the maximum compressive bearing capacity of specimen C under tension–compression cyclic loading increased by 9.9% compared to monotonic loading, from 473 MPa to 520 MPa.…”

Section: Results and Analysismentioning

confidence: 99%

“…For this reason, in ABAQUS, the “tie” function was used to bind the three parts into pairs. Furthermore, in order to trigger the specimens’ instability during cyclic loading, the shape of the first-order buckling mode with a loading length of 1/1000 in the buckling analysis results was introduced into the finite-element model as an initial geometric defect [ 22 ].…”

Section: Finite-element Simulation and Parametric Analysismentioning

confidence: 99%

“…The basic mechanical properties of specimens C and c under tension-compression cyclic loading are compared with the monotonic compression performance in [22]. From Figure 10, it can be seen that the maximum compressive bearing capacity of specimen C under tension-compression cyclic loading increased by 9.9% compared to monotonic loading, Due to the more obvious cyclic hardening effect of steel, the maximum compressive bearing capacity of the specimens under tension-compression cyclic loading is greater than that under tension-tension cyclic loading.…”

Section: Comparison Of Mechanical Properties Under Different Loading ...mentioning

confidence: 99%

“…Lastly, the minimum FRP tube diameter, considering the enhancement effect of monotonic compressive performance, was given, and design curves were proposed for FCCC-R with three types of internal rebar with nominal yield strengths of 400 MPa, 800 MPa, and 1100 MPa. On this basis, Lu et al [ 22 ] also investigated the influence of GFRP strips with different winding layers and angles on the monotonic compression performance of FCCC-R specimens. By performing monotonic compression tests on a series of FCCC-R specimens, it was concluded that their monotonic compression performance increased as the increase in GFRP strips’ winding layers and winding angles and decreased as the slenderness ratio increased.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Research on Hysteretic Behavior of FRP-Confined Concrete Core-Encased Rebar

Mou

Wang

et al. 2023

Polymers

Self Cite

View full text Add to dashboard Cite

FRP-confined concrete core-encased rebar (FCCC-R) is a novel composite structure that has recently been proposed to effectively delay the buckling of ordinary rebar and enhance its mechanical properties by utilizing high-strength mortar or concrete and an FRP strip to confine the core. The purpose of this study was to study the hysteretic behavior of FCCC-R specimens under cyclic loading. Different cyclic loading systems were applied to the specimens and the resulting test data were analyzed and compared, in addition to revealing the mechanism of elongation and mechanical properties of the specimens under the different loading systems. Furthermore, finite-element simulation was performed for different FCCC-Rs using the ABAQUS software. The finite-element model was also used for the expansion parameter studies to analyze the effects of different influencing factors, including the different winding layers, winding angles of the GFRP strips, and the rebar-position eccentricity, on the hysteretic properties of FCCC-R. The test result indicates that FCCC-R exhibits superior hysteretic properties in terms of maximum compressive bearing capacity, maximum strain value, fracture stress, and envelope area of the hysteresis loop when compared to ordinary rebar. The hysteretic performance of FCCC-R increases as the slenderness ratio is increased from 10.9 to 24.5 and the constraint diameter is increased from 30 mm to 50 mm, respectively. Under the two cyclic loading systems, the elongation of the FCCC-R specimens is greater than that of ordinary rebar specimens with the same slenderness ratio. For different slenderness ratios, the range of maximum elongation improvement is about 10% to 25%, though there is still a large discrepancy compared to the elongation of ordinary rebar under monotonic tension. Despite the maximum compressive bearing capacity of FCCC-R is improved under cyclic loading, the internal rebars are more prone to buckling. The results of the finite-element simulation are in good agreement with the experimental results. According to the study of expansion parameters, it is found that the hysteretic properties of FCCC-R increase as the number of winding layers (one, three, and five layers) and winding angles (30°, 45°, and 60°) in the GFRP strips increase, while they decrease as the rebar-position eccentricity (0.15, 0.22, and 0.30) increases.

show abstract

Section: Results and Analysismentioning

confidence: 99%

Section: Finite-element Simulation and Parametric Analysismentioning

confidence: 99%

Section: Comparison Of Mechanical Properties Under Different Loading ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Research on Hysteretic Behavior of FRP-Confined Concrete Core-Encased Rebar

Mou

Wang

et al. 2023

Polymers

Self Cite

View full text Add to dashboard Cite

show abstract

Investigation on three-dimensional printed prosthetics leg sockets coated with different reinforcement materials: analysis on mechanical strength and microstructural

Ramlee,

Ammarullah,

Mohd Sukri

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Previous research has primarily focused on pre-processing parameters such as design, material selection, and printing techniques to improve the strength of 3D-printed prosthetic leg sockets. However, these methods fail to address the major challenges that arise post-printing, namely failures at the distal end of the socket and susceptibility to shear failure. Addressing this gap, the study aims to enhance the mechanical properties of 3D-printed prosthetic leg sockets through post-processing techniques. Fifteen PLA + prosthetic leg sockets are fabricated and reinforced with four materials: carbon fiber, carbon-Kevlar fiber, fiberglass, and cement. Mechanical and microstructural properties of the sockets are evaluated through axial compression testing and scanning electron microscopy (SEM). Results highlight superior attributes of cement-reinforced sockets, exhibiting significantly higher yield strength (up to 89.57% more than counterparts) and higher Young’s modulus (up to 76.15% greater). SEM reveals correlations between microstructural properties and socket strength. These findings deepen the comprehension of 3D-printed prosthetic leg socket post-processing, presenting optimization prospects. Future research can focus on refining fabrication techniques, exploring alternative reinforcement materials, and investigating the long-term durability and functionality of post-processed 3D-printed prosthetic leg sockets.

show abstract

Experimental and Numerical Investigation of Axial Compression Behaviour of FRP-Confined Concrete-Core-Encased Rebar

Cited by 2 publications

References 25 publications

Research on Hysteretic Behavior of FRP-Confined Concrete Core-Encased Rebar

Research on Hysteretic Behavior of FRP-Confined Concrete Core-Encased Rebar

Investigation on three-dimensional printed prosthetics leg sockets coated with different reinforcement materials: analysis on mechanical strength and microstructural

Contact Info

Product

Resources

About