Experimental Study on Self-Centering Performance of the SMA Fiber Reinforced ECC Composite Beam

Yang, Zhao; Deng, Tingyu; Li, Jiankun; Xu, Cheng

doi:10.3390/ma15093062

Cited by 10 publications

(11 citation statements)

References 19 publications

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“…Chen et al [ 36 ] also proved the improvement in strength and ductility and the self-centering ability of SMA-ECC specimens. The author’s previous research [ 32 ] also confirmed the effectiveness of SMA fibers in improving the energy dissipation and self-centering ability of ECC beams.…”

Section: Introductionmentioning

confidence: 59%

“…Compared with concrete or mortar, ECC has much larger tensile deformation capacity, so it is more compatible with SMA fibers. In addition, the crack distribution of ECC is wide and the crack width is small, which can enable more SMA fibers to participate in the work and reduce the difficulty of SMA fibers to close the crack [ 32 ]. On the other hand, SMA fibers can provide crack closure and self-centering capability for ECC, which can effectively solve the problems of residual deformation and residual cracks of ECC materials.…”

Section: Introductionmentioning

confidence: 99%

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Bonding Mechanical Properties between SMA Fiber and ECC Matrix under Direct Pullout Loads

Yang

Gong

et al. 2023

Materials

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SMAF-ECC material composed of shape memory alloy fiber (SMAF) and engineered cementitious composite (ECC) has good bending and tensile properties, as well as good crack self-healing ability, energy consumption, and self-centering ability. The bond behavior between fiber and matrix is crucial to the effective utilization of the superelasticity of SMAF. The experimental study considered three variables: SMA fiber diameter, fiber end shape, and bond length. The pullout stress–strain curve of SMAF was obtained, and the maximum pullout stress, maximum bond stress, and fiber utilization rate were analyzed. Compared with the straight end and the hook end, the maximum pullout stress of the specimen using the knotted end SMAF is above 900 MPa, the fiber undergoes martensitic transformation, and the fiber utilization rate is above 80%, indicating that the setting of the knotted end can give full play to the superelasticity of the SMAF. Within the effective bond length range, increasing the bond length can increase the maximum anchorage force of the knotted end SMAF. Increasing the fiber diameter can increase the maximum pullout stress and maximum anchoring force of the knotted end SMAF but reduce the utilization rate of SMA fiber. This study provides a reliable theoretical basis for the bonding properties between SMAF and ECC.

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Section: Introductionmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Bonding Mechanical Properties between SMA Fiber and ECC Matrix under Direct Pullout Loads

Yang

Gong

et al. 2023

Materials

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“…In these studies, the SMAs were used to improve the vibrational and buckling behaviors of the designed composite. Later, extensive research was performed to investigate active control of SMA-based hybrid composite beams [ 6 , 7 , 8 , 9 ], plates [ 10 , 11 , 12 , 13 , 14 , 15 ], shell panels [ 16 ] and sandwich panels [ 17 , 18 ]. More recently, due to the wide application of SMAHC structures in engineering, theoretical frameworks, which are qualified for accurately analyzing their dynamic and static behaviors, have drawn extensive attention.…”

Section: Introductionmentioning

confidence: 99%

Computational Modeling and Parametric Analysis of SMA Hybrid Composite Plates under Thermal Environment

Stachiv

2023

Sensors

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This paper presents a coupled thermoelastic finite element formulation for static and dynamic analysis of composite laminated plates with embedded active shape memory alloy (SMA) wires, which accounts for both the phase transformation and the nonlinearity effects of SMA wires. The equations of motion are obtained by using Hamilton’s principle and first-order shear deformation theory (FSDT). Furthermore, based on Brinson’s one-dimensional phase transformation constitutive law, a novel coupled thermoelastic finite element model that enables analysis of the SMA hybrid composite (SMAHC) plate is developed. The accuracy and efficiency of the developed computational model for analysis of SMAHC plates are reinforced by comparing theoretical predictions with data available from the literature. The results of the numerical examples also show the ability of the proposed model to predict the thermal-mechanical behavior of SMAHC plates in accordance with SMA’s hysteresis behavior. In addition, based on the proposed model, the influence of temperature as well as SMA volume fraction, pre-strain value, boundary condition and layup sequence on the static bending and free vibration behavior of the SMAHC plates is investigated in detail. The results of parametric analysis show that the variations of both static deflection and natural frequency of the SMAHC plate over temperature exhibit a nonmonotonic behavior.

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“…Author [16][17] conducted three-point bending cyclic loading tests and cyclic tensile tests on SMA/PVA-ECC specimens and found that SMA fibers with knot ends could fully exert their superelastic properties, providing hysteresis energy dissipation capacity for the specimens and achieving crack closure and bending self-recovery functions, significantly improving the maximum tensile stress of the dog-bone specimens.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of SMA/PVA-ECC under Uniaxial Tensile Loading

Yang

Zhong

et al. 2023

Preprint

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Although SMA/PVA hybrid fiber reinforced cementitious composites (SMA/PVA-ECC) exhibit excellent crack closure and deformation recovery capabilities, the research on their fundamental mechanical properties is still limited. This study investigates the tensile mechanical properties of SMA/PVA-ECC materials by conducting uniaxial tensile tests, analyzing the failure behavior, stress-strain curves, and characteristic parameters of the specimens, comparing the influence of SMA fiber content and diameter, and establishing a tensile constitutive model. The results show that the residual crack width of SMA/PVA-ECC specimens significantly decreases after unloading, and the SMA fiber content and diameter have a significant impact on the tensile properties of the specimens. The comprehensive tensile properties of specimens with a fiber diameter of 0.2 mm and content of 0.2% are the best, with their initial cracking strength, ultimate strength, and strain increasing by 56.4%, 23.6%, and 13.4%, respectively, compared to ECC specimens. The proposed bilinear tensile constitutive model has high accuracy. This study provides a theoretical basis for further research on SMA/PVA-ECC materials.

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Experimental Study on Self-Centering Performance of the SMA Fiber Reinforced ECC Composite Beam

Cited by 10 publications

References 19 publications

Bonding Mechanical Properties between SMA Fiber and ECC Matrix under Direct Pullout Loads

Bonding Mechanical Properties between SMA Fiber and ECC Matrix under Direct Pullout Loads

Computational Modeling and Parametric Analysis of SMA Hybrid Composite Plates under Thermal Environment

Mechanical Properties of SMA/PVA-ECC under Uniaxial Tensile Loading

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